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
i drive 85% freeway so i change the oil and oil filter every 7500 miles using Castrol Edge 0W-20 synthetic oil since 2017 no vehicle issue.
I put Castrol euro 5w-50 made for BMW and it's 6-7 liters and change it every 5000km I have a 2003 330ci and it still runs like new
5w40 VW 502 spec. Audi recommends Castrol so that's what I use.
Personally i never run ”GM” oil in my 95s anymore. I usually run Castrol edge 0-40
Penzoil the best!
I ran this in my mk7 and my brother ran Castrol Edge Euro in his mk7. I have since sold mine but neither one of us had any type of engine/oil consumption issue and he still has with 130k on it.
I personally have used the RN17FE 0W-20 (Renault branded Castrol GTX bottles) for 10k km after the innitial oil that was filled in the factory (I don’t know which one was filled in factory). I haven’t noticed any better fuel economy but that can be tough to determine because I drove the car mainly through the winter and did more shorter trips than the original factory first fill oil that I drove with during spring and summer.
HP Prolube is a very low quality oil compared to other oil brands in the market. Castrol has good head sound dampening, as does Rowe, both great for gear shifts and clutch feel.
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