0w-40 Oil?

[rbish56]

i picked up mobil 1 oil from costco 6qts for $28. It meets audi standards for oil but is it wise to use it? i am stage 2 UM tuned. on all the websites i see 5w-40 being used. i just want to make sure ill be alright. i plan on changing the oil in 5k miles. can anyone advise? thank you!

[fR3ZNO]

0W40 just means you'll have better oil flow at lower temperatures compared to 5W40. That is what the "W" rating on oil grades refers to, stands for "winter".

[q5 dave]

No concern. I ran M1 0w-40 for over 40k miles before switching to Rotella 5w40.

[rbish56]

thank you, guys! why the switch to rotella if you dont mind me asking?

[superk1075]

I am pretty sure “W” stands for weight.



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[q5 dave]

thank you, guys! why the switch to rotella if you dont mind me asking?

No reason other than Walmart had it on sale when I was oil shopping haha. Runs great in both the q5 (V6T) and B5 1.8t.

I am pretty sure “W” stands for weight.

+1 Figured he was just trolling but idk Audizine can be surprising lmao.

[Davethaboss]

I just bought some. Doing my oil change today actually. Mobil1 is the best. They put the most research into oil and they are a category 5 oil, I think.

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[RDA990]

I am pretty sure “W” stands for weight.

+1 Figured he was just trolling but idk Audizine can be surprising lmao.

It does actually stand for winter:

https://www.valvoline.com/about-us/f...-viscosity-faq

What does the "w" in a grade of motor oil stand for?

The "w" in motor oil stands for winter. The first number in the oil classification refers to a cold weather viscosity. The lower this number is, the less viscous your oil will be at low temperatures. For example, a 5W- motor oil will flow better at lower temperatures than a 15W- motor oil. The higher number, following the “w” refers to hot weather viscosity, or how fluid your oil is at hot temperatures. The higher the number, the thicker the oil at a specified temperature.

[superk1075]

You’re right, just learned something new.


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[n8vs3]

i picked up mobil 1 oil from costco 6qts for $28. It meets audi standards for oil but is it wise to use it? i am stage 2 UM tuned. on all the websites i see 5w-40 being used. i just want to make sure ill be alright. i plan on changing the oil in 5k miles. can anyone advise? thank you!

Use 0W-40. Usually it has "higher grade" base oil than 5W-40. For example castrol OE 5W-40 (stuff sold to dealerships) is formulated with cheaper base oil than castrol 0W-40 (will say made in Belgium or German).. search on this topic at bobistheoilguy.com

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[n8vs3]

I just bought some. Doing my oil change today actually. Mobil1 is the best. They put the most research into oil and they are a category 5 oil, I think.

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Mobil 1 0W-40 is not true group V (ester based) oil. It is still a very good oil for the price. I believe it is group III (hydrocracked ultrarefined oil) + maybe some group IV (PAO) + additives. I run M1 in my Audi

It is my understanding that true Group V oils are brands like high end stuff like Motul and Redline.. but $15/qt engine oil is probably overkill outside of professional racing. Look up MSDS in oils you buy,it is often a blend of different base oilz..

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[Davethaboss]

Mobil 1 0W-40 is not group V (ester based) oil. It is still a very good oil for the price. I believe it is group III (hydrocracked ultrarefined oil) + maybe some group IV (PAO) + additives. I run M1 in my Audi

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I went to proof read my comment because, I forgot if it was group V or IV. I thought I made the change but, it did not. Thank you for correcting the incorrect statement.

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[rbish56]

thanks man, i appreciate this!

[MikTip]

My S3 performs better with 0winter 40 oil😎

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I run Castrol😎

Summer I will run 5summer 40😋

[Spinnetti]

higher weight = higher drag, windage and more heat (and worse heat transfer to the cooling system) and less hp delivered to the wheels. On the flip side, if you don't have enough film thickness you don't have enough lubrication. Really need an oil pressure gauge to see if your oil is in the right range for your driving environment. In racing, we often run "0" weight oil or as thin as will deliver about 10psi oil pressure per 1,000 rpm.