Car idles smoother with Castrol it seems.
I run 10w-40 castrol gtx been running it for the past 5 years I drive a 2011 wrx
Rotella T6 5w-40 is what I’ve ran in the car ever since it was tuned and I get great feedback from blackstone labs when sending in my oil for analysis.
ran Castrol 20w50 GTX in my 2.4 Naps Z D21 since new the mechanic who put on new head gasket w/215.000 due to a bad radiator said engine looked brand new inside
Used 5w40 castrol for most its life, but vw504 standard is good too. Using it now and the old man says it runs good.
My experience sa long ride, malamig sya for my scooter. Ayun yung ginagamit ko after mag general pms. Better sya sa ibang nasubukan kong engine oil like petron.
My Mazda3 which I service myself now, Castrol edge 5w-30 and feels happier. Same engine too.
I always used blue "german" coolant in my e90 bmw oddly it also recommended Castrol oil. Specifically called for it in oil cap
Castrol euro 540. Tried liquid moly and a few others but my car burns them for some reason.
Avoid. Tried it, it burnt off very quickly. Back to Castrol with my tail between my legs.
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