I've always used Mobil 1 fully synthetic 10w-30, what about you guys? I was looking for Diff fluid at bimmerworld and noticed they has redline motor oil and thought about how good it should be considering they race their cars and probably use redline...
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81Castrol38.27%31Mobil(1 or otherwise)41.98%34Redline7.41%6Shell1.23%1Other (Specify)7.41%6whatever is cheapest.3.70%3
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I use Castrol Syntec 5w-50 in my m20.Tenured Automotive Service Professional - Avid BMW Enthusiast
Vapor Honing & E30 ABS Pump Refurbishment Service
https://mtechniqueabs.com/ -
I've been using castrol GTX for a while (10-40). I'd run mobile 1 don't think I'd want to put synthetic in a 175k bottom end. :p
all 3 of my diffs have redline fluid in them though, good stuff.Comment
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Mobil 1 for years. It's da best, and no I don't have scientific proof, just a hunch on my part. :D
[THE 501 club - Founding Member]Comment
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15w40 Rotella in the winter time. and Kendall GT1 20w50 in the summer time. Yes my motor is some what loose so I have to make up for it.
'87 325 (Track Rat)
'04 C5500 Wrecker (Work)
'94 525i (Daily)
'90 325i (R.I.P)
H&R Race, Racing Dynamics Sway Bars, Tree House CAB's, Sparco Strut Bars and more.Comment
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I switched to Mobil1 40 and the engine got way noisier. Back to Castrol dyno 40 all is back to as it was. Remember cold here is 60.
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used to pay out the ass for mobil1 15w50, then realized that a 165K motor is just eating that stuff up(blow-by). went to castrol gtx 20w50 and stuck with it.IG: @Baye30
FRONT VALENCE IS ZENDER!!! STOP FILLING MY PM BOX PPL!!!Comment
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Castrol GTX for high mile M20s, and Jeep 242s. Mobil 1 in my old Audi 20VComment
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lubromoly 10w-40sigpicComment
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castrol is what bmw uses isn't itOriginally posted by bluntComment
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I pick between Mobil 1 and Castrol.The BMW 318 is back. With a vengeance.Comment
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BMW uses castrol for their BMW oil.
I'm using mobil 1 15w-50, I like the 5 quart jug from walmart.
How much is the 5w50 syntec?Last edited by DaN; 12-09-2005, 08:39 PM.
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If BMW uses Castrol I may have to try that.Comment
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Affirmative. BMW uses 5w30 Castrol in most of their engines. This does not include that crazy 0w60 for the newer M engines, or 10w60, or whatever the hell it is.Comment
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"castrol is what bmw uses isn't it"
Yes... BMW also recommends 10k mile oil change intervals...
Have you looked at an S54 with Castrol recommended oil? It's not pretty!Comment
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