Best engine oil

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Mar 22, 2009 | 10:47 AM

Wilbur2001XJ

Thread Starter

Newbie

Joined: Mar 2009

Posts: 27

Likes: 0

Year: 2001

Model: Cherokee

Engine: 4.0L

Best engine oil

Just wondering what the oil of choice was for the 4.0L(engine oil that is). thanks

Mar 22, 2009 | 11:02 AM

jstewart1960

Junior Member

Joined: Oct 2008

Posts: 72

Likes: 0

Model: Cherokee

I use

I've been using quaker state 10w-30 for years mine has 280,000 miles 1992.

Mar 22, 2009 | 12:20 PM

Mullins_j

Member

Joined: Oct 2008

Posts: 181

Likes: 1

From: New Hampshire

Year: 1994

Model: Cherokee

Engine: 4.0

I was going to Valvoline to get my oil changed. I asked for 10-30, they said they stopped making it, and all they had was 5-30. Ran that for two oil changes, started to have a knocking noise, lower end. Switched back to doing my own, I use Pennzoil 10-40, with Lucas additive. No more knock, much happier 4.0L

Oh yeah, mine's a '94 with 202,XXX on it, still runs strong.

Last edited by Mullins_j; Mar 22, 2009 at 12:22 PM. Reason: senior moment

Mar 22, 2009 | 12:30 PM

whowey

CF Veteran

Joined: Apr 2008

Posts: 2,237

Likes: 3

From: Northern Illinois

Year: 90

Model: Cherokee

Engine: 4.0

Use a quality API-SL rated oil in the correct vicosity for your particular enviroment and you will be set.

Mar 22, 2009 | 12:30 PM

jpdocdave

Senior Member

Joined: Aug 2008

Posts: 971

Likes: 0

From: tan house white shutters key's under the flower pot

Year: 1996

Model: Cherokee

Engine: 4.0

i will never use penzoil, it is perafin based (wax) and turns to sludge. i've taken apart too many motors where people say they only used penzoil, and the valve covers and such have a caked on layer of sludge.

i used castrol for a while, but i like valvoline max life the best.