Robull
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- Thread starter
- #1
om my 08 from day one it says 5w-20 I have been using 5w-30 I have 140,000 mi runs like new now on my 2018 jl it says 0-20 just wondering what viscosity oil do yall use in your 3.6l , the reason I ask because before someone says u should use what it says we also have a fleet of fords and all of them gas engines that say 5-20 and they have been using 5-40 because of the diesels trucks they have and these trucks have no issues and some of them have over 350,000 miles running 5-40 oil in and its obvious my 08 has no problems
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