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Discussion Starter · #1 ·
I've got a number of questions upon delivery of our T6 this past week. I'll put them each as separate topics to keep things clean.<p>So far the car is awesome, I can't believe how much nicer it is than the '04.<p>Regarding fuel, the book says 87 octane is ok, and 91 octane will give better mileage and performance. Our dealer strongly recommended only using 87 octane. Our first 2 hr trip this past weekend with 87, combined city/highway, we got 21 mpg.....after reading many threads here, I was expecting the worse, like 12 or something, so this was a pleasant surprise!!!<p>Any comments on what you all recommend for octane?
 

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Re: XC70 T6 Fuel? (Surf NH)

I use premium. I paid for that horsepower and I don't want the engine managment computer cutting the horsepower because I used lower octane.<p>Some people really get upset about the whole regular vs. premium thing and won't even buy a car that recommends premium. Let's see how cheap some people can really be:<p>12,000 mi per year / 20 mi per gallon = 600 gallons of gas used per year. 600 gal * .20 price difference = a whopping $120 per year more to use premium. I'll gladly pay the extra $10 per month to get all the HP I paid for by getting the T6.
 

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Re: XC70 T6 Fuel? (BarentsBlueV50)

Around here, it used to be an extra 20 cents per gallon for Premium. Now it is an extra 40 cents.
 

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Discussion Starter · #4 ·
Re: XC70 T6 Fuel? (Surf NH)

good point on cost, in NH it's around 0.20/gal more.....
 

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Re: XC70 T6 Fuel? (Surf NH)

Hi there, search is your friend (even though it doesn't work that great!). <p>With the T6, go with premium.<p><A HREF="http://forums.swedespeed.com/zerothread?id=107591" TARGET="_blank">http://forums.swedespeed.com/zerothread?id=107591</A><p>According to the manual:<p>"Volvo recommends premium fuel for best performance, but using 87 octane or above will not affect engine reliability.<p><B>Volvo engines are designed to achieve rated horsepower, torque, and fuel economy performance using premium 91 octane fuel.</B>"
 

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Re: XC70 T6 Fuel? (BarentsBlueV50)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BarentsBlueV50</b> »</i></TD></TR><TR><TD CLASS="quote">I use premium. I paid for that horsepower and I don't want the engine managment computer cutting the horsepower because I used lower octane.<p>Some people really get upset about the whole regular vs. premium thing and won't even buy a car that recommends premium. Let's see how cheap some people can really be:<p>12,000 mi per year / 20 mi per gallon = 600 gallons of gas used per year. 600 gal * .20 price difference = a whopping $120 per year more to use premium. I'll gladly pay the extra $10 per month to get all the HP I paid for by getting the T6.</TD></TR></TABLE><p>True for some, different for others...<p>My wife and I really care very little about "all the HP", opt when we can for the smallest engines, and do not mind to pocket $400 - 500 a year (35,000 mi combined on two cars, 15 MPG on XC90, 20 MPG on S80). Extra couple of round trip ticket anywhere in US as a bonus...Why not...<p>It is not about to be cheap - it is about of spending money judiciously...we still spend them - just in the different areas...<p>I vote for the regular, whenever allowed...
 

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Re: XC70 T6 Fuel? (gascos80)

I'm sorry gascos. I should not have used the word "cheap." I should have said some people are just "wired differently." I would also like to point out that since Volvo does not require premium for the 3.2 you would not be "some people."<p>A couple at a party I attended recently were interested in my car because they are in the market for a new one. The women asked what kind of gas it took and said she would not buy a car that required premium. I asked her how much they drive a year. She replied about 10k. I told her it was less than $10 a month difference if her car got 20mpg. She said so what, she wouldn't buy it. Her girlfriend rolled her eyes.<p>My wife's RX400h requires premium according to the Lexus (the manual and the fuel filler door sticker). It still pisses her off, but not as much since I showed her the numbers. She drives less than 10k and her car gets 26mpg so the cost differential is even less, but she is still pissed. I just roll my eyes.<p>If one is going to spend 40-50k or more on a car and that car requires premium and one either doesn't buy that car (for that reason) or puts regular in it if they buy it, then one is "wired differently."
 

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Re: XC70 T6 Fuel? (BarentsBlueV50)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BarentsBlueV50</b> »</i></TD></TR><TR><TD CLASS="quote">I'm sorry gascos. I should not have used the word "cheap." I should have said some people are just "wired differently." I would also like to point out that since Volvo does not require premium for the 3.2 you would not be "some people."<p>A couple at a party I attended recently were interested in my car because they are in the market for a new one. The women asked what kind of gas it took and said she would not buy a car that required premium. I asked her how much they drive a year. She replied about 10k. I told her it was less than $10 a month difference if her car got 20mpg. She said so what, she wouldn't buy it. Her girlfriend rolled her eyes.<p>My wife's RX400h requires premium according to the Lexus (the manual and the fuel filler door sticker). It still pisses her off, but not as much since I showed her the numbers. She drives less than 10k and her car gets 26mpg so the cost differential is even less, but she is still pissed. I just roll my eyes.<p>If one is going to spend 40-50k or more on a car and that car requires premium and one either doesn't buy that car (for that reason) or puts regular in it if they buy it, then one is "wired differently."</TD></TR></TABLE><p>I hear what you say, and I never question people who use premium. As always, I do not hide my opinions, but it does not mean that everyone have to follow me.<p>And in the past, requirements for the premium fuel never stopped me from buying cars that I liked (Nissan Maximo comes to my mind).<p>
 

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Re: XC70 T6 Fuel? (Surf NH)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Surf NH</b> »</i></TD></TR><TR><TD CLASS="quote">. Our dealer strongly recommended only using 87 octane. </TD></TR></TABLE><p>Strongly recommend? Why would that be? <p>As to the rest of the topic, my opinion is well known so I won't go there. But here is a technical question (real, not retorical). <p>The XC70 loaner I got for a week got about 17 MPG on my daily commute, whereas my R gets 20 to 21 on the same commute. <p>I am sure that my car, being a loaner, came with 87 in the tank (indeed, that is what I refilled it with being a cheap bastard and knowing it won't hurt the car). <p>Would the car see improved mileage being run on 93?
 

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Re: XC70 T6 Fuel? (Needsdecaf)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Needsdecaf</b> »</i></TD></TR><TR><TD CLASS="quote"><p>Strongly recommend? Why would that be? <p>As to the rest of the topic, my opinion is well known so I won't go there. But here is a technical question (real, not retorical). <p>The XC70 loaner I got for a week got about 17 MPG on my daily commute, whereas my R gets 20 to 21 on the same commute. <p>I am sure that my car, being a loaner, came with 87 in the tank (indeed, that is what I refilled it with being a cheap bastard and knowing it won't hurt the car). <p>Would the car see improved mileage being run on 93? </TD></TR></TABLE><p>And I think we went there so many times as well.<p>The real (non rethorical) answer is - No, not really. It was established, both empirically, and by many citations on this forum that the difference in mileage is less significant than the difference in prices.<p>This argument was used equally to justify both, premium and regular. <p>So, if the difference in price is usually less than 10%, you would not have more than single digit %% point improvement by using premium fuel.<p>Most places in US have 91 at the best, and the difference in anti-knocking capabilities between 87 and 91 is not that great, so the ignition retardation is not that great either, so the HP loss is not that great, and so....<p>I did some experiments with different grades in the past, and always came to a conclusion that the most significant factor to the gas consumption is your driving style, given similar or identical vehicles...
 

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Re: XC70 T6 Fuel? (gascos80)

The most biggest differences between regular and premium are seen at or near WOT. The further you are from that, the less significant it becomes.<p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>gascos80</b> »</i></TD></TR><TR><TD CLASS="quote">...the most significant factor to the gas consumption is your driving style...<br></TD></TR></TABLE><p> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: XC70 T6 Fuel? (gascos80)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>gascos80</b> »</i></TD></TR><TR><TD CLASS="quote"><p><br>Most places in US have 91 at the best, and the difference in anti-knocking capabilities between 87 and 91 is not that great, so the ignition retardation is not that great either, so the HP loss is not that great, and so....<br>..</TD></TR></TABLE><p>I disagree with this. Knock is a determination of load, not necessarily rpm. <p>And I am not sure that the difference isn't so great. <p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>gascos80</b> »</i></TD></TR><TR><TD CLASS="quote">, and always came to a conclusion that the most significant factor to the gas consumption is your driving style, given similar or identical vehicles...</TD></TR></TABLE><p>I can agree that this is the largest variable, for sure. <p>
 

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Re: XC70 T6 Fuel? (Needsdecaf)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Needsdecaf</b> »</i></TD></TR><TR><TD CLASS="quote"><p>I disagree with this. Knock is a determination of load, not necessarily rpm. <p>And I am not sure that the difference isn't so great. <p></TD></TR></TABLE><p>I did not say RPM either... octane index is an ability to burn without detonation under compression. All I said that such ability is not that different between 87 and 91. Retardation allows for the igniting the fuel mix pass the point of full compression at any RPM. <p>Many moons ago we had 2 grades, 76 and 93, in the former Soviet Union. That difference was significant, but any way - we were able to use 76 in the cars designed for 93, because 93 was distributed mostly through the retail chains, while 76 was widely available commercially, and thus could be "diverted" from the government owned vehicles to the privetly owned...<p>
 

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Re: XC70 T6 Fuel? (Needsdecaf)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Needsdecaf</b> »</i></TD></TR><TR><TD CLASS="quote">As to the rest of the topic, my opinion is well known so I won't go there. But here is a technical question (real, not retorical). <p>The XC70 loaner I got for a week got about 17 MPG on my daily commute, whereas my R gets 20 to 21 on the same commute. <p>I am sure that my car, being a loaner, came with 87 in the tank (indeed, that is what I refilled it with being a cheap bastard and knowing it won't hurt the car). <p>Would the car see improved mileage being run on 93? </TD></TR></TABLE><p>More likely that the R turbo is more fuel efficient than the T6; even with one less gear. However, premium would have probably narrowed the gap a bit.
 

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Re: XC70 T6 Fuel? (BarentsBlueV50)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BarentsBlueV50</b> »</i></TD></TR><TR><TD CLASS="quote">I asked her how much they drive a year. She replied about 10k. I told her it was less than $10 a month difference if her car got 20mpg. She said so what, she wouldn't buy it. Her girlfriend rolled her eyes.<p>If one is going to spend 40-50k or more on a car and that car requires premium and one either doesn't buy that car (for that reason) or puts regular in it if they buy it, then one is "wired differently."</TD></TR></TABLE><p>You mean simple logic doesn't work with them? <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/tongue.gif" BORDER="0"> She'd rather get her daily $3 lattes at Starbucks than spend the extra $10 a month at the pump!<BR><BR>
<i>Modified by Lotus99 at 7:55 AM 7-8-2009</i>
 

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Re: XC70 T6 Fuel? (Surf NH)

<p>Now I have a diesel but for the other 30 years of my working like i have had petrol and all this hi octane low and middle octane (actually we only get low and premium (high) has only come in over here in the last 10 years at a guess. <p>When I had my happily departed forester i had a country trip stopped into the Shell and filled up with the cheap stuff. Drove to where I was going (straight there and no additional miles) and used all but a tank. I filled uup with the good stuff and went straight home, same route, and had a little under quarter of a tank left. it was a lot more of a pleasurable drive also. it was ALL on highway and no traffic. After that I never again bothered with the cheap stuff as the good stuff really increased the range of the forester which has a small tank and being a lazy sort of cove I preferred not to fill up every other day. <p>Try getting a tank of cheap stuff and doing the mileage against a tank of the good stuff (run it right down if you can and set the speedo and look at the average usage and note it down). It would be an interesting real world run. <p>Rather envious of your T6 have to say though we dont get them over her.<p>Cheers<br>Hatdriver
 

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Discussion Starter · #18 ·
Re: XC70 T6 Fuel? (Hatdriver)

in the end, I agree that's its cheap to use the premium fuel in NH, but my wife is half scottish and $100 is $100.....its her car and she'll put whatever fuel she wants in it as long as it runs (she just told me). I guess she could care less about hp, so I think we'll end up with regular fuel in this puppy.<p>like someone else mentioend, when it comes to emotion, logic goes out the window...... <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0">
 

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Re: XC70 T6 Fuel? (Surf NH)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Surf NH</b> »</i></TD></TR><TR><TD CLASS="quote">in the end, I agree that's its cheap to use the premium fuel in NH, but my wife is half scottish and $100 is $100.....its her car and she'll put whatever fuel she wants in it as long as it runs (she just told me). I guess she could care less about hp, so I think we'll end up with regular fuel in this puppy.<p>like someone else mentioend, when it comes to emotion, logic goes out the window...... <IMG NAME="icon" SRC="http://www.vortexmediagroup.com/images/banghead.gif" BORDER="0"> </TD></TR></TABLE><p>It is very LOGICAL not to argue with your wife about non-essential minute points...
 

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Discussion Starter · #20 ·
Re: XC70 T6 Fuel? (gascos80)

It didn't take too many years for me to learn that lesson! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 
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