Novak Conversions Jeep Wrangler JK radiators

Synthetic oil

Boogieman

New Member
Joined
Aug 22, 2025
Messages
1
Location
Pismo Beach, Ca
I have read non synthetic oil is better for the 3.6 engine to guard against dry starts. Just purchased a 2015 JK with 70,000 miles and need to do an oil change. Appreciate advise on the subject. Currently engine runs great, no ticks, just smooth quiet idle. Hope to keep it that way.
 
I'm not really sure it's better for cold starts, but they do say you can get better mileage from using it. I like to add a little Lucas Oil Additive to my oil so that it makes it kinda sticky.
 
Novak Conversions Jeep Wrangler JK radiators