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Castrol Forum

Professional automotive forum, sponsored and run by Castrol, for discussion of Castrol oil products. Messages may include, but are not limited to, passenger car motor oil, motorcycle oil, automatic transmission fluids, other fluids, motor oil types, product specifications, product applications, and other related topics. This forum is for experienced automotive repair professionals only, membership required.

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Recent Automotive Discussions in the Castrol Forum

05/15/2018 in the Castrol Forum
Do you have an oil that meets ACEA A5/B5 spec ?
What's Different in High-Mileage Oil?
05/14/2018 in the Castrol Forum
While I am aware that oil formulations for "mature" engines contain different additive packages from their conventional counterparts, I am not very clear on the particulars. What list of circumstances of older engines can be addressed by enhancing the add...
What oil to use in 1969 triumph 600
05/09/2018 in the Castrol Forum
Wife inhereted her dads old chopper trying to bring it back to life after sitting for years .Going through carb and fuel tank now.Figured i should give it fresh oil before attempting to fire it up.
0W-20 oil
04/04/2018 in the Castrol Forum
Looking for clarification on what 0W-20 oil translates to!
best oil for aircooled vw's
03/02/2018 in the Castrol Forum
I have been using 15w40 synthetic blend in aircooled vw's, but I was wondering if there was a better option, since the oil does all of the cooling. I thought about switching to a 5w40 acea a3/b4, but i'm not sure if that will help with the cooling, or mak...

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