SwedeSpeed - Volvo Performance Forum banner

1 - 12 of 12 Posts

·
Registered
Joined
·
908 Posts
Discussion Starter · #1 ·
I did a few forum searches but didn't find the specific info I was looking for...<p>I drive a 2005 S40 2.4i. Because it's not a turbo, I am following Volvo's 7500 mile interval using Mobil 1 synthetic oil. If I were using conventional oil, I'd do 3750 mile intervals. <p>Anyway - I've had my oil changed twice - replaced the factory fill at 3750 with conventional oil and then 7500 using Mobil 1 5w30. I went with 5w30 because it was December and the greater Cleveland area gets VERY COLD in the winter. <p>I'm getting ready to go back for the 15k mile oil change and can't figure out if I should use 5 or 10w30. I won't go in for another oil change until spring and just want to make sure 10w30 will be ok throughout the winter. We've only had a couple of days over 86 degrees but seeing that Mobil's 10w30 pours at -45, it seems to me I can use it year round. <p>Any thoughts? Opinions? Other mid-westerners with suggestions.<p>Thanks!
 

·
Registered
Joined
·
957 Posts
Re: Oil grade question... (CINCYFAN)

If Your using the car for frequent short trips I'd use the 5W-30. If Your planning long highway trips in hot weather then the 10W-30 would be appropriate. <br> For example My daily commute is about 60 miles. I use 10W-30 Mobil 1. Last Sunday I ran the 400 miles home from INDY 75-80 mph in about 5-1/2 hrs with only one stop for food. 5W-30 would be a bit light bodied for that. If I had a 5-10 mile city commute I'd be using that viscosity however.
 

·
Registered
Joined
·
908 Posts
Discussion Starter · #3 ·
Re: Oil grade question... (POWERSTROKE)

Thanks for the reply - my commute is 30 miles a day and it's 80% highway. My main concern is that the temps will go up in August and September (which would call for 10w30) but once I'm into the real cold winter months (December through April in Cleveland) 10w30 won't be appropriate. I guess I could get the oil changed again but assuming I use synthetic, the 7500 mile interval is ok with the non-turbo.<p>All that being said - Mobil 1 10w30 is supposed to pour to -45 F. It doesn't get that cold so I should be ok with the 10, right? <p>Thanks again.
 

·
Registered
Joined
·
957 Posts
Re: Oil grade question... (CINCYFAN)

I think I'd opt. for the 5W-30 still. Wife had a '99 Lumina Chevy with the 3.1L V-6 We put 80,000 miles on in four years and I used 5W-30 year round in it per the Owner's Manual instructions. Her '03 Mercury Mountaineer gets Motorcraft 5W-20 synthetic blend in the 4.6L V-8 year round now. I may switch to Mobil 1 now that they make a full synthetic in that viscosity. <br> I change My oil around 3500-4000 miles in everything except for My diesel pickup which now only gets changed twice a year..... early winter to winter weight 10W-30 and in the spring to summer weight 15W-40. <br> I'd run 10W-30 now until this fall around late Nov., early Dec. and change to 5W-30 but I've been accused to changing oil WAY too frequently.
 

·
Registered
Joined
·
21,166 Posts
Re: Oil grade question... (CINCYFAN)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>CINCYFAN</b> »</i></TD></TR><TR><TD CLASS="quote">All that being said - Mobil 1 10w30 is supposed to pour to -45 F. It doesn't get that cold so I should be ok with the 10, right?</TD></TR></TABLE><p>I use 10/30 Mobil 1 year round in my R. Since it pours to -45F, I don't worry too much about the cold weather. I worry more about the higher end temps since 5/30 is recommended only up to 86F.<p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>POWERSTROKE</b> »</i></TD></TR><TR><TD CLASS="quote">I think I'd opt. for the 5W-30 still. Wife had a '99 Lumina Chevy with the 3.1L V-6 We put 80,000 miles on in four years and I used 5W-30 year round in it per the Owner's Manual instructions. Her '03 Mercury Mountaineer gets Motorcraft 5W-20 synthetic blend in the 4.6L V-8 year round now. I may switch to Mobil 1 now that they make a full synthetic in that viscosity. </TD></TR></TABLE><p>The statements above prove that you should stick to the owners manual. My wife's Honda manual stipulates 5/20 but I wouldn't even consider such a weight in the R since Volvo does not recommend it.<p>Here's a similar discussion going on in the R forum if you're interested:<p><A HREF="http://forums.swedespeed.com/zerothread?id=61623" TARGET="_blank">http://forums.swedespeed.com/zerothread?id=61623</A><p>
 

·
Registered
Joined
·
957 Posts
Re: Oil grade question... (MagoonR)

An interesting observation about the oil viscosity recommendations from VOLVO...... when it gets REALLY hot here I guess I'll have to park the S40 and run My old diesel pickup.....the 15W-40 in it is good ABOVE 104 Deg F. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> The A/C in the old truck works better anyhow. That off-black T-TEC in the S40 is HOT!<br> A word of caution on running higher viscosity oils in cold temps....the circulation is slower and can cause more wear on start-up. About 5 yrs ago We had an early cold snap while I still had 15W-40 in My truck..... temps were something like 15-18 degrees F. after work one night and the 15W-40 is recommended down to 32 degrees..... and I heard moans and chattering and Terrible squeals for about 20-30 seconds from the HEUI injection system I hope I NEVER hear again.... The 10W-30 is good to something like minus 15 or 20 and I've never heard those noises with the lighter oil. When it's that cold I run the truck around town for a half hour at lunch to keep some heat in the engine. Or I stay home..... <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0"> <br> Engine oil is a "Compromise". Lower viscosity oils circulate faster and carry off heat faster. Higher viscosity oils circulate slower and tend to heat up more inside the bearings because of the reduced flow. I find it rather disappointing Volvo didn't include an oil PSI gauge let alone an oil temp gauge in the S40 T5. At least they hold 6 quarts of oil...... An old co-worker had an Audi that only held 3-1/2 or 4 quarts......about what My lawnmowers hold.
 

·
Registered
Joined
·
908 Posts
Discussion Starter · #7 ·
Re: Oil grade question... (CINCYFAN)

I read the owner's manual cover to cover and don't know how I missed this...<p><I><B>Extreme engine operation</B><br>Synthetic oils meeting SAE 10W-30 and complying with oil quality requirements are recommended for driving in areas of sustained temperature extremes (hot or cold), when towing a trailer over long distances, and for prolonged driving in mountainous areas.</I><p>
 

·
Registered
Joined
·
3,952 Posts
Re: Oil grade question... (CINCYFAN)

Volvo makes it a little confusing for us. several times , before buying oil, I think of the chart in the owners manual and think which is better? , so far I have always gone with 10-30 Mobile 1 synthetic , but thought of 5-30 every time. I guess following that chart and if you're borderline between the 2 (like me) either would be OK. Thought I understood a thing or two about oil until I read a volvo owners manual. always thought there was a range and because of this a 5-30 would always be better than a 10-30, I guess the viscousity in the 10-30 stays a tad higher always than a 5 -30 ????<p>but, in short still confused how a synthetic 10-30 would be superior to a 5-30? <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/confused.gif" BORDER="0">
 

·
Registered
Joined
·
21,166 Posts
Re: Oil grade question... (V50_T5)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>V50_T5</b> »</i></TD></TR><TR><TD CLASS="quote">but, in short still confused how a synthetic 10-30 would be superior to a 5-30? <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/confused.gif" BORDER="0"> </TD></TR></TABLE><p>Probably a bit more stable due to the narrower viscosity spread (ie. less additives). I could be wrong though.
 

·
Registered
Joined
·
908 Posts
Discussion Starter · #10 ·
Re: Oil grade question... (V50_T5)

V50_T5 - I don't know where you are now but I wouldn't have any concerns about using 10w30 in DC. I'm sure you know DC area gets hot and sticky and it pretty much stays that way spring through fall.
 

·
Registered
Joined
·
1,235 Posts
Re: Oil grade question... (V50_T5)

I usually do 5/30 for my cars, primarily due to the lower temp. I live in Canada and winters can be quite cold here <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0"><br>As far as as the upper temps are concerned - my thought is (correct me if I'm wrong) - that normal working temperature for gas engines is ~90C, therefore outside air temps really don't matter, even in winter time the oil hits 90C and stays that way. No matter how sticky and hot it is outside - as long as the engine is not overheating - it's 90C.
 
1 - 12 of 12 Posts
Top