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    White Residue on Oil Cap - Castrol 5w40

    [Note, I've also posted this to the General Forum, but since it tangentially involves European Oils, and there's a different reader base here, I figured, "what's the harm?".] I just checked the oil level on my car and opened the oil cap to look inside when I noticed a little white residue on...
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    White Residue on Oil Cap

    I just checked the oil level on my car and opened the oil cap to look inside when I noticed a little white residue on the oil cap and on the rim where the cap screws in. It looks almost like cafe au lait. It's too dark, so I can't see into the crankcase when I remove the cap. However, the oil on...
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    Questions Re: Castrol 5w40 and topping up with GC

    I have a 2006 Jetta GLI (2.0T engine), and the dealer uses Castrol 5w40 for oil changes (I think they used to use M1 0w40). Since I like to go the full 10K between oil changes, I'm thinking of using GC as a top-up oil, since (like M1) it is also rated VW 503 01 (VW's long-drain standard). Does...
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    VW 2.8L Question

    OK, another question, this time on the VW 2.8L used in the B5 Passats. My dad's noticed that the B5 consumes a fair amount of oil, up to a quart per 1,000 miles, in mixed driving. He's always followed the 5k OCIs per the book, using conventional 5w30. He's noticed that Castrol GTX (which the...
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    BMW Oil Question

    Does anyone here know what BMW's OEM fill is? My brother-in-law just got a new 2006 325 with the de-tuned 3.0, and I was curious as to what Euro oil goes into it. My search turned up rumors in year-old posts that it was re-badged Castrol, but not "GC" per se. Any confirmation of that? With...
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    Is There a Decent FAQ on GC?

    After reading posts on BITOG for the past few weeks, I've observed that most of the discussion is very technical and beyond the scope of the average enthusiast. Despite this, there doesn't seem to be too much on the BITOG home page to get the new reader up to speed. I think a FAQ (or a link to...
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    Oil Change Interval Question - VW 2.0T

    I know similar threads were posted a few months ago, but now that there are a few more of these engines in circulation, I was curious for your thoughts on VW's recommended oil change interval of 10K after the first two at 5k miles. In short, assuming I do about 50/50 city/highway driving and...
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