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Old 05-29-2003, 10:04 PM
cf cf is offline
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Join Date: Aug 2000
Posts: 51
Castrol R is NOT compatible with mineral oil.

Very good racing oil but requires complete flushing of engine before first use.

Last I used it was about 10 years ago in Asia old stock from shelf.

If my memory serves me right Castrol R did not have much cleaning agent and not really recommended as a `daily' oil.

Given the advance of synthetic oil I really doubt Castrol still makes it.

Good memory though

I use synthetic when I could afford it. But had my dislike for the early version of Mobil 1 as it always seemed to lose its shine on turbo-engines after the first 1000-1500 miles.



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