Any opinions on valvoline conventional 10w30 vs pennzoil or Quaker State.
Valvoline is excellent and returns the lowest wear numbers out of all the oils when it comes to the 4.0 and 2.5. However, if you don't want to look at it that deeply, all brands are great, and super close. Just look for an API certification, and get the proper grade. Good to go after that. Oh, and get a good filter. Cheers
I try to use Havoline 10w30. Im not saying it is superior, it is what me and my dad could get at a good price when I was growing up. Now it seems like it is one of the more expensive oils and, even though, I have ran a different name brand once or twice I try to run the same oil every time. I think the best thing you can do for your engine is keep the oil and filter changed properly. I have a WJ with 134K that has had Havoline and Castrol ran in it and a YJ with 140K that has had Havoline and Pennzoil ran in it. I try to put in the same oil every 5k if not sooner. Combined with spark pug changes, air filters, and intake cleanings they both run strong as I ever remember.
I have been running Valvoline in my vehicles since I started driving in 1994. I have no hard data to back up my usage but have suffered no engine failures. I am reasonably certain that oil brand x or y would have been good too. I just stick to what works for me.
2005 Jeep TJ with some upgrades
I had problems with quaker state from sludge formation and hard, crusty deposits in top of cylinder heads. It was the only oil I used for 5 years. Since switching to valvoline on FI engines and Rotella on carbed motors, no sludge problems going on 20 years now.
418 miles on 19 gallons of gas. Can't beat the BBD !
Originally Posted by 90DesertTanYJ View Post
.....AND to keep the oil level up into the "hash marks" or full.
My Dad always said: "Any oil is better than NO oil."
-- '95 YJ, 4-cyl, 5-speed.
From Dec-Mar, it wears an 80" snowplow. From Apr-Nov, it gets muddy on the 2-tracks!
"War does not determine who is right, war determines who is left."
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