Thosen who said the factory installed oil filter is on super tight weren't exaggerating!@!@!

I just hit 3000 miles yesterday, so I went ahead and put in 5 quarts of Castrol Syntec 5W-30 and a PureONE filter. I could swear she actaually smiled at me afterward.

For those running synthetic, did you feel an immediate change to the way your KJ runs, or is it a lot more subtle than that?

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2008 Unlimited Rubicon - 3.5" AEV/Nth lift - 35" MT/R with Kevlar - AEV Wheels - York OBA
2008 Patriot - Fuel Saver

I never noticed a difference in the way it runs at all. However, I don't need to change my oil as often and it offers better protection under hard conditions.