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Old 01-30-2011, 12:39 PM   #7
dirkdiggler
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Join Date: Jul 2010
Location: USA
Posts: 276
Yeah, ,my next oil change will be the castrol Syntec 10-40 for sure

I have been reading that Castrol Syntec isnt really a TRUE FULL synthetic oil though??? Apparently the raw oil they start out with for this product is still dino oil. Mobil sued them years ago for this.

Can do a quick search on this ...... "Castrol Syntec not real synthetic" will give you some good reads!

Is the current Castrol Syntec actually full synthetic??
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