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 5,xxx miles oil changes. The thing about it is, it takes way too long for the engine to reach to it's full operating temperature with this oil. I don't track or abuse my cars, but I do long highway drives. I always asked my self if the TWS is unnecessary for my purpose? Then I saw UOA reports at M3post where E9x M3s having lower lead values with a thinner oil like the Mobil 1 0w-40. So this made me think what to put in the E46 M3.
In my '01 740iL, I recently switched from BMW's 5w-30 oil to Castrol 0w-40 (the one that is made in Germany). I debated between the Castrol 0w-40 and the Mobile 1 0w-40 before the switch, then I decided to go with a brand that I used for 310,xxx miles in my previous '98 740iL which was the Castrol (and also for the fact that this particular 0w-40 oil is made in Germany which I thought would most likely be a group IV. oil). So far I am extremely pleased with this oil in my car. I can really feel that the car is more responsive on low rpm range. So I bought 20 or so of the 5 quart bottles while they were on sale at Wal-mart
So straight down to my question; although it's specifically the Mobil 1 brand, the 0w-40 weight is used and even is the OE oil in some high performance and reputable brands such as Nissan GT-R, Porche and Mercedes-Benz AMG. Would the Castrol 0w-40 be also fine to run in a E46 M3? I couldn't find any comparison for these two oils. Is the Mobile 1's 0w-40 oil superior to the Castrol's 0w-40? Even though it's used in Porsches and other high performance cars, is the 0w-40 weight oil too thin for the S54 in E46 M3?
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 5,xxx miles oil changes. The thing about it is, it takes way too long for the engine to reach to it's full operating temperature with this oil. I don't track or abuse my cars, but I do long highway drives. I always asked my self if the TWS is unnecessary for my purpose? Then I saw UOA reports at M3post where E9x M3s having lower lead values with a thinner oil like the Mobil 1 0w-40. So this made me think what to put in the E46 M3.
In my '01 740iL, I recently switched from BMW's 5w-30 oil to Castrol 0w-40 (the one that is made in Germany). I debated between the Castrol 0w-40 and the Mobile 1 0w-40 before the switch, then I decided to go with a brand that I used for 310,xxx miles in my previous '98 740iL which was the Castrol (and also for the fact that this particular 0w-40 oil is made in Germany which I thought would most likely be a group IV. oil). So far I am extremely pleased with this oil in my car. I can really feel that the car is more responsive on low rpm range. So I bought 20 or so of the 5 quart bottles while they were on sale at Wal-mart
So straight down to my question; although it's specifically the Mobil 1 brand, the 0w-40 weight is used and even is the OE oil in some high performance and reputable brands such as Nissan GT-R, Porche and Mercedes-Benz AMG. Would the Castrol 0w-40 be also fine to run in a E46 M3? I couldn't find any comparison for these two oils. Is the Mobile 1's 0w-40 oil superior to the Castrol's 0w-40? Even though it's used in Porsches and other high performance cars, is the 0w-40 weight oil too thin for the S54 in E46 M3?