Hello everyone! I've read through most threads on oil that people have been using. But haven't heard a lot about Motul being used. Is it worth it upgrading to Motul for a higher quality synthetic oil? Or any other higher quality ones like AMSOIL or Royal Purple? I've been running Mobil 1, and just switched to Liqui Moly in my daily S60. But looking for something better for my modded S60 and anyones opinions, criticisms, etc on top tier oils.
Best Oil for Modded Car? Motul?
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You can switch to boutique oils and they generally provide benefits - greater film strength, more exotic synthetic base stocks, etc.
However, without having to get exotic, M1 10w30HM is a very, very robust oil, scads tougher than it's other full-synthetic peers in the 5w-30 class and most other 10w-30s. HTHS (which basically decides how "tough" an oil is -film strength) is 3.5 vs. a typical 3.1/3.2 for most other 30 weights - is is an exponential scale so that is not a small difference. Unless you live in a fairly extreme cold climate, 10w30 offers no cold-start downside and considerable full-temp benefits.
For reference, Redline 10w-30, an excellent boutique oil, also has an HTHS of 3.5 - which is the top end of the "30" weight. A 3.6 becomes a (very thin) 40 weight - like most 0w-40s. I have run the Mobil 1 10w30HM in high-output, small displacement, high-pressure turbo engines (as well as many others), and had the oil laboratory tested after 7,500 miles. It was still within spec and doing well. I am sure other boutique oils would have been, too - like redline, Motul, etc. But for the ease of availability and relatively low cost vs. performance, it's my pick.
However, without having to get exotic, M1 10w30HM is a very, very robust oil, scads tougher than it's other full-synthetic peers in the 5w-30 class and most other 10w-30s. HTHS (which basically decides how "tough" an oil is -film strength) is 3.5 vs. a typical 3.1/3.2 for most other 30 weights - is is an exponential scale so that is not a small difference. Unless you live in a fairly extreme cold climate, 10w30 offers no cold-start downside and considerable full-temp benefits.
For reference, Redline 10w-30, an excellent boutique oil, also has an HTHS of 3.5 - which is the top end of the "30" weight. A 3.6 becomes a (very thin) 40 weight - like most 0w-40s. I have run the Mobil 1 10w30HM in high-output, small displacement, high-pressure turbo engines (as well as many others), and had the oil laboratory tested after 7,500 miles. It was still within spec and doing well. I am sure other boutique oils would have been, too - like redline, Motul, etc. But for the ease of availability and relatively low cost vs. performance, it's my pick.
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Mobile 1 changed every 5K miles. I’ve run it in multiple HP Volvo’s and it’s the spec oil for my Supercharged, 650HP Camaro, so It keeps my vote.
The key is frequent oil changes and any good quality synthetic of the appropriate viscosity for your environment.
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The key is frequent oil changes and any good quality synthetic of the appropriate viscosity for your environment.
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880 Posts
Royal purple is garbage, back on my vRs old motor when it used to burn oil, I did experiments with different oil brands, seeing which looked the cleanest after 5k and burned the least. I found:
Mobil 1 10w30 burned 0.8 quarts every 1200 miles
Royal Purple 5w40 burned 0.8 quarts every 600 miles
Valvoline 10w30 burned 0.8 quarts every 1200 miles
Castrol Edge 5w40 burned 0.8 quarts every 1800 miles
Been on Castrol for all my cars ever since.
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Mobil 1 10w30 burned 0.8 quarts every 1200 miles
Royal Purple 5w40 burned 0.8 quarts every 600 miles
Valvoline 10w30 burned 0.8 quarts every 1200 miles
Castrol Edge 5w40 burned 0.8 quarts every 1800 miles
Been on Castrol for all my cars ever since.
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2011 XC90 R-Design Ice White, 2013 XC60 T6 R-Design Black Sapphire Metallic
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I believe it does not matter what brand of oil you use as long as you religiously changing oil at specified intervals. Today's oil technologies had advanced that they contain multiple additives to keep the lubricating properties better/longer. What I would think about is, if your S60 is an R is the engine block to keep an eye on.
Have you seen Castrols new euro spec 5w40? Have you tried running that yet by chance?
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I have! Seems to be the same as the old 5w40 I used to get from them, although no oil is burnt, since a new motor has since been swapped in (cracked sleeve).
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Driven DT40, change every 2k
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