Quote:
Originally Posted by 4winds4me
I have a 2019 Thor class c e350 v10 the oil cap states 5-30 wt. I bought 5-20 wt full synthetic Mobil -1 and used it ,not thinking it was a big deal , can I run this weight without a problem, My toad is a 2005 2dr Jeep.
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No, not a big deal. Next time, I would buy what the fill cap says. Our 2016 E450 stripped chassis also said 5w-30 and our service guys didn't quite believe me. Our 2019 F-53 filler cap says 5W-20.... The service manuals can be different than the filler caps I have found and has been confirmed by past discussions on the forum.
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