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Re: Oil with high zinc additives
Posted to Castrol Forum on 10/24/2017 15 Replies

HI Dennis:

Two motor oils with a high zinc content which would perform well in small air-cooled 4-cycle engines are Castrol Edge 5W-50 (API SN) and Castrol GTX Diesel 15W-40 CJ-4 (API CJ-4/SN). Small air cooled engines run hotter than liquid cooled engines a... Login to read more.

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