oil problem?

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Sep 27, 2011 | 11:32 AM

#16

Want2wheel

Newbie

Joined: Sep 2011

Posts: 25

Likes: 0

From: High Point NC

Year: 2000

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by DFlintstone

It rarely freezes here and is nearly always above 50. With high mileage I use 30W and am sure to warm it up a bit when it IS cold. with multy grade my Jeep knocks a little, don't have a gauge. I've never lost an engine runing Castrol 30 W. It's been that way for 10 years. I can here it knock with multy-grade.

Do I have to worry since it does get in the teens and 20s around me in the winter? What will the straight 30w oil do in the cold?

Sep 27, 2011 | 11:42 AM

#17

DFlintstone

CF Veteran

Joined: Aug 2011

Posts: 10,489

Likes: 24

From: Nor-Cal Coast

Year: 90,84

Model: Cherokee

Engine: 4.0,2.5

Yea not sure that would be a good idea. In severe cold that stuff may well take too long to get up where it's needed. In my opinion a new engine with supper tight clearances can use a much thinner oil than something like mine which might have clearances around .040. And, as anyone knows, you run saw-dust in a differential.

Sep 27, 2011 | 12:18 PM

#18

Want2wheel

Newbie

Joined: Sep 2011

Posts: 25

Likes: 0

From: High Point NC

Year: 2000

Model: Cherokee

Engine: 4.0

What oil would y'all reccomend then? I asked the guy I bought it from he just changed it with 10-30w. Also I am goin to get a good oil pressure gauge that way I know the actual pressure

Sep 27, 2011 | 12:28 PM

#19

andyg

Member

Joined: Sep 2011

Posts: 141

Likes: 0

From: North Chicago

Year: 1993

Model: Cherokee

Engine: 4.0

10-30 or 40 will be fine. Even the 15-40 too unless it gets super cold by you. The cold viscosity isn't that much different, the benefits are more cushion for the piston pushing when hot.