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Discussion Starter · #1 ·
South, another oil thread but hopefully it'll be kept simple.

I decided that is time I really stay paying attention because oil is a lot more complicated than what I'm used to.

So the owners manual for my 07 3.2 AWD doesn't say enough for me to make a decision due to changes in oil testing.



Now, after doing some searching, the A1/B1 testing was replaced with a "C class" testing. But I've not found any information which says "This c-class rating replaces this a/b class rating". So I have no reference for oil.

I've seen a VERY wide range of response of both brand and viscosities. So let me detail my environment.

I'm in Southern Ontario, Canada. Spring is on the edge of finally poking is head up. Temps are hovering around freezing atm. I don't do any towing at all. Mostly daily driving to work (15-20min each way) and I like to go on long drives around my area.

I'm quite happy to use only synthetic oil but after all my reading, I'm just more confused than ever in what to buy.

Best I've come up with is Penzoil Synthetic but still no idea of what viscosity to get. The Volvo manual recommends Castrol brand.

I don't believe there is any significant oil consumption. (Just checked).

So....help?


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South, another oil thread but hopefully it'll be kept simple.

I decided that is time I really stay paying attention because oil is a lot more complicated than what I'm used to.

So the owners manual for my 07 3.2 AWD doesn't say enough for me to make a decision due to changes in oil testing.



Now, after doing some searching, the A1/B1 testing was replaced with a "C class" testing. But I've not found any information which says "This c-class rating replaces this a/b class rating". So I have no reference for oil.

I've seen a VERY wide range of response of both brand and viscosities. So let me detail my environment.

I'm in Southern Ontario, Canada. Spring is on the edge of finally poking is head up. Temps are hovering around freezing atm. I don't do any towing at all. Mostly daily driving to work (15-20min each way) and I like to go on long drives around my area.

I'm quite happy to use only synthetic oil but after all my reading, I'm just more confused than ever in what to buy.

Best I've come up with is Penzoil Synthetic but still no idea of what viscosity to get. The Volvo manual recommends Castrol brand.

I don't believe there is any significant oil consumption. (Just checked).

So....help?


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I've been using Pennzoil Platinum Ultra from Canadian Tire. It goes on sale for ~30$CAD / 5L.
They also have mail in rebates.

It meets / exceeds these specs and has great test results.
I've also moved family members over to Pennzoil Platinum due to the value - no complaints so far.

I think any modern synthetic oil you buy that meets the specs is going to do you well.
I used to use M1 across all my vehicles and made the switch about 4 years ago to PP due to the value.
 

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Discussion Starter · #4 ·
I've been using Pennzoil Platinum Ultra from Canadian Tire. It goes on sale for ~30$CAD / 5L.
They also have mail in rebates.

It meets / exceeds these specs and gets great reviews.
I tend to stock up for my entire fleet.
But....what viscosity?! Is yours a 3.2 as well?


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But....what viscosity?! Is yours a 3.2 as well?


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Yes, I have my 3.0 Turbo XC60 on PPU and my 3.2 XC90 on PPU post "care free maintenance".

I run 5W-30 - that's what the NA manuals state for normal conditions.

In Europe, Volvo states 0W-30 for the same SI6 engine codes under normal conditions.

The 2013 XC90 3.2 manual has a section on where 0w-30 is advisable over 5W-30.
 

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Yes, I have my 3.0 Turbo XC60 on PPU and my 3.2 XC90 on PPU post "care free maintenance".

I run 5W-30 - that's what the NA manuals state for normal conditions.

In Europe, Volvo states 0W-30 for the same SI6 engine codes under normal conditions.

The 2013 XC90 3.2 manual has a section on where 0w-30 is advisable over 5W-30.
I use Mobil 1 0W-40 and it is close to the Castrol 0W-30 in both cold and hot viscosity. The Castrol 0W-30 is an A3/B3 (higher than A1/B1) oil and so is the Mobil 1 0W-40. This means it is spec'd for more protection in severe operating conditions and for extended drain intervals (which indicates the oil, additives, and multi-grade degrades at a lesser rate over the use interval). Even if you are not towing, severe driving could be driving in traffic, waiting at the kid's school line on idle, to driving on a very hot day.

The Castrol 0W-30 is quite expensive, so I use the Mobil 1 0W-40 bought at Walmart. It is a great all seasons oil, is approved for Mercedes and Porsche, and has additional anti-wear additives which the 3.2 could benefit from.
 

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I am sharing some of my work researching oils. This does not have all the information/specs available, but it does have the relevant ones. With the 3.2, wear could cause oil consumption over time. To combat this, an oil with a higher shear rating, or HTHS, will help reduce the wear on load, such as accelerating or carrying passengers. The 5W-30 oils have lower shear ratings compared to the 0W-40 oils or Castrol's 0W-30.

The W[inter] viscosity is the "pumping ability of oil temperatures as low as minus 10 to minus 40 degrees C." Even if a 0W-40 oil has a higher viscosity rating at 40C, it will still pump better at freezing temps than a 5W-30. Better pumping in freezing weather, better protection in hotter weather, and better shear rating, this is why I recommend the 0W-40 oils. The Castrol 0W-30 is a good alternative, but in the States, it is expensive.

Viscosity Index is how consistent the viscosity maintains, or how much it can keep the multi-grade rating from degrading. Higher Index number is better. Notice how the 0W-40 oils are better at keeping their multigrade viscosities.

So, my recommendation of Mobil 1 0W-40 for the 3.2 is based on data and personal experience. If your 3.2, or other engine say 2.5t, is consuming oil after the Mobil 1 0W-40, then try the Castrol 0W-40 next oil change since it is a little thicker.

 

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Ontario gets pretty cold winters and reasonably hot summers. The question is, what oil was used until this moment on the engine: synthetic or mineral? If you switch to synthetic, expect a high consumption for several months and possible quickly clogged oil filter. I'd verify the level a few days after the oil change, then weekly.

I'm in Montreal and I like to use the best the Castrol 0W-30 oil (someone else also mentioned this oil) because by -15C the engine is better lubricated and warms up quicker. But it's expensive being sold only by the 1L at $13/piece and never gets discounts at Canadian Tire. Instead, I go the cheaper way with Castrol 0W-40 which sells by 5L for $35 on discount.

A 0W-30 or 0W-40 oil is ideal for our winters. These grades are only going to be offered in synthetic oil. But even a 5W-30 oil is going to do fine at -15C start up, as long as the battery is in good shape.

Your engine is non turbo so a mineral oil will do just fine, it's just that it will need replaced at a shorter interval, compared to a synthetic oil.

I would disregard those A, B or C classes when choosing an oil. Every oil on the market has the right attribute for these engines, even very recent engines (2015 up) can do with most oils, perhaps a more specific situation are the modern engines that require 0W-20 or 5W-20 grade oils (we should never use a -20 grade oil in an engine that wasn't specified for this grade)
 

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Don,

I own two 3.2's (Same engine in both)

2010 S80 3.2 125,000 miles
2008 LR2 3.2 117,000 miles

The LR2 has used Mobil 1 0W-40 or German Castrol 0W-30 since new. (Mostly Mobil 1)

The S80 was purchased used with 123,000 miles for my Son to drive and it is using Mobil 1 0W-40 now.

I don't add oil between oil changes

To be more specific I drive the 7,500 miles or 6 months and then I change the oil and the oil level doesn't drop. (I have never seen a low oil message)

What you need to decide is if you want to spend $6 per liter or if you want to spend $12 per liter.

For my money $6 per liter Mobil 1 0W-40 is the way to go.

One last note the S80 (purchased used) likely didn't have synthetic oil in it since new and because of that the O-rings on the Brake Vacuum pump leaked oil and I needed to repair them and the seals for the intake manifold had a sticky residue and the seals were not very compliant.

For me the choice is simple Mobil 1 0W-40

Look at the signature line for ChitownV above "no oil consumption using Mobil 1 0W-40 even w/ my lead foot"

Good Luck

Paul
 

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Discussion Starter · #12 ·
Thanks everyone. That has helped tremendously!

I picked up Mobil 1 0W40, happened to be on Sale at CanTire for $46.99($10 off each bottle). (Technically I only paid $40 because I got like $70 of CT money a few weeks ago after buying a battery for the vehicle )

Whew....need 7.5L of oil.....thought my 02 S40 took a lot at 5L!


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I think it takes closer to 8 and that's why I run it out to the full 12000 kms. between oil changes. I started with the Castrol synthetic 5-30, last couple of years mostly use Mobil 1 5-30, maybe I'll switch to 0-40. Last winter I had a collapsed filter in the Fram ultra expensive variety. Something tells me that was with Castrol but not 100% positive. Now I buy the filters at Volvo.
 

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Discussion Starter · #14 ·
I think it takes closer to 8 and that's why I run it out to the full 12000 kms. between oil changes. I started with the Castrol synthetic 5-30, last couple of years mostly use Mobil 1 5-30, maybe I'll switch to 0-40. Last winter I had a collapsed filter in the Fram ultra expensive variety. Something tells me that was with Castrol but not 100% positive. Now I buy the filters at Volvo.
7.4L to be exact

And it's good to know that I'm not losing any oil. Despite some vacuum pump leak.





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Thanks everyone. That has helped tremendously!

I picked up Mobil 1 0W40, happened to be on Sale at CanTire for $46.99($10 off each bottle). (Technically I only paid $40 because I got like $70 of CT money a few weeks ago after buying a battery for the vehicle )

Whew....need 7.5L of oil.....thought my 02 S40 took a lot at 5L!


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I would buy three 5L jugs when they have a deal with a filter. One filter for the BMW, one for the Volvo, and one for the 944. Then I would buy racing oil for the 944. since the 944 motor went down in a blaze of smoke I have a dozen quarts of racing oil and a few filters. Good thing a neighbor just bought a 944 to work on with his son. Now I don't know what to do when I buy oil. I will have too many filters.
 

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Changed engine oil on the RD V8 recently acquired. Thanks to all for the discussion, especially CV and DD for your research, which helped me become comfortable with narrowing to two choices. (Choice 3 was used by previous owner.) Carefully pushing oem filter onto engine within chassis was small surprise. We'll see how it goes. Thanks
 

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Rather than starting a new thread, revive this very good one. My 2011 XC90 just reached 90k and we have decided to keep it rather than replace with a 2020 XC90 (decided on a 2020 C63S instead), so I am looking at prolonging life as much as possible. Dealer has been using Valvoline conventional 5W-30 its entire life without issues except a low oil message at 85K miles. I am looking to switch oils since I will be going to non-dealer for services and thinking about which oil. C

It seems like Mobil 1 0W-40, or Castrol 0W-30 Edge (or Castrol Edge 0W-40 if I run into issues), but at 90K miles I am wondering if it would be better to use the high mileage formulas (Castrol High mile or Mobil 1 High mile 5W-30)?
 

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This is probably entirely coincidental, but, immediately upon switching to Castrol High Mileage oil I went from never having to add oil between changes to adding a quart every 1200-2000 miles. Since then I've tried many other types of oil but the consumption persists.
 

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This is probably entirely coincidental, but, immediately upon switching to Castrol High Mileage oil I went from never having to add oil between changes to adding a quart every 1200-2000 miles. Since then I've tried many other types of oil but the consumption persists.
One of my hesitations with HM is that it may cause a problem with the additives - perhaps some amount of sludge or grime is plugging the leaks from using dino oil. https://forums.swedespeed.com/showthread.php?584887-Anyone-use-conventional-oil-in-their-xc90s/page2

I had a great experience with Cataclean additive that I was going to run a Techron in the tank and Seafoam through the intake for an upcoming road trip and then get the oil changed.

I have a 3.2 also, and I was hoping that they were more resistant to oil leaks (I have two Audi S4s that require a quart between oil changes).
 
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