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Originally Posted By: aa1986 OP said he bought 20 x 5qt jugs of Castrol 0w40, so I guess he has to use those now! I'm running the Castrol 0w40 for the first time and am liking it. I've used M1 0w40 in the past and right now prefer the Castrol. But we'll see how the whole OCI goes. I don't...

Originally Posted By: HTSS_TR Castrol Edge 0w-40 has as many approvals as M1 0W40, so it would be as good as any other oil on those lists, especially you don't track your M3's you don't need TWS 10w-60. For regular price of $21.xx vs $26.xx for M1 at Walmart I would use Castrol. Almost nobody...

Originally Posted By: aquariuscsm Swing by a few Autozones,they still have Castrol Edge 0W40 for $1 a quart (I picked up three 5 quart jugs for $5 each). Are you serious? I thought $21 for a 5 quarts bottle was a good deal

Originally Posted By: JHZR2 Originally Posted By: Reflex The thing about it is, it takes way too long for the engine to reach to it's full operating temperature with this oil. The heat capacity of a 10w-60 vs 0w-40 likely is very similar. Heat capacity is defined as kJ/kg*K So for 1kG of...

Originally Posted By: Jeffs2006EvoIX I kinda answered your own question or concern, you used brand X for 300+ thousand miles and had no problems, but brand Y is good too. What do I buy? If you had no issues with brand X for that many miles, why switch? Everything else really is irrelevant. As...

Long time follower of the site, so I decided to join and ask a few noob questions if I can I currently own an '08 M3 which is leaving my garage soon, an '01 740iL sport and a newly purchased '02 M3 with super low miles. I used the Castrol TWS 10w-60 oil in my E92 M3 in it's entire life with...