11GenSonicSi
Member
- Thread starter
- #16
27WON did a very nice writeup on their website. They are the experts.Hmm I might cancel my lifetime oil plan if 0W-20 isn’t good for the engine. I know my mechanic recommended at least 5W-20. He ran 5W-30 but his si was heavily modified.
20 weight might not be a bad thing and it provides adequate protection under certain use cases. You should choose the desired oil weight based on your needs.
My car falls into WOT 20-40 minutes. Hence the 30 weight. Otherwise I’d just run whatever Honda puts in this engine.
https://www.27won.com/blog/the-great-oil-debate-civicx?format=amp
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