Owners manual says API certified. Amsoil signature series is not api certified. I know you work at a dealer- any cause for alarm or voiding of warranty?If your car is never going to see a track, Amsoil Signature Series 0W-20 is the best. If you track it then you can go up in weight to 5w-30 or 5w-40.
FL5 comes with ServicePass so just work with whatever oil they use during that service but Signature series exceeds the requirements that Honda set for its oil.Owners manual says API certified. Amsoil signature series is not api certified. I know you work at a dealer- any cause for alarm or voiding of warranty?
Signature is one Of the few Amsoil not API certified. There’s a big debate on it on several car forums. Linking one below, but there’s a ton of you google it.@pigfacedalarm Amsoil is API certified. Well, some of their oils, like those used for diesels, are not. But certainly the stuff we’d put in our cars is. Check it out, down toward the bottom of the page. This is Amsoil’s normal grade. Signature is even better…but not API certified, so you’re right about that.
Yeah, that’s totally understandable. In the event of an engine problem, Honda would definitely want records of your oil changes, which would show what you had put in the engine. API or not could be a point of contention. I think @AspecR has the best advice. Maybe by the time your ServicePass period has run out, Amsoil will have gotten the Signature Series API certified. They’re losing potential sales by not having it I think.
The cheapest bulk oil they can find.Driver's manual recommend 0W-20.
What brand the Dealership use ?
I've heard that the honda oil is actually pretty good, but I believe that was from some japanese video from spoon.The cheapest bulk oil they can find.