Anyone use 5w30 in a jeep 4.0

[crazyoildude]

Does anyone use 5w30 in a jeep 4.0 in the winter?

 

[MrRPM]

That is whats recommended from jeep for cold climates. so theres probably thousands that do.

 

[Zaedock]

Yep, under conditions that most Jeeps here would never see.

I like the QS syns. Picked em up for $5/jug on clearance, when they changed the name again.

I think my daughter's '89 Cherokee 4.0L has Formula Shell 5W30 right now.

 

[beast3300]

All the Jeeps that we get are filled with 5w30.

 

[Kira]

Hello, Add my sister's 1999 to the 5W-30 list. Hmm-Hmm Good! Kira

 

[Zaedock]

Originally Posted By: Kira
Hmm-Hmm Good!


Pic's? (of your sister)

 

[KCJeep]

I have Pennzoil 5w30 in mine right now, and it seems to have done great on it. That said the next OCI coming up will be 10w30 as winter here will be history by then.

I have done a lot of digging, and the best (lowest) wear UOA's I've seen for the Jeep engines have almost all been on 10w30's. I wouldn't hesitate at all to use the 5w30 for the cold starts in winter, but beyond that 10w30 is the way to go for the Jeep.

 

[ckmarsh]

yes 5w 30 for winter i use 10w30 in the summer my jeep runs a little hot

 

[thr_wedge]

10w40 HM year round. 1996 ZJ 4.0 w 210k.

 

[MNgopher]

Yes, every winter. AMC recommended for my '88 Cherokee...

 

[chubbs1]

Originally Posted By: Zaedock
Originally Posted By: Kira
Hmm-Hmm Good!


Pic's? (of your sister)

 

[caravanmike]

in my 1999 xj manual 5w-30 is on the sliding scale for very cold weather. but 10w-30 was the oil that covered most of the scale. it probably does not matter since we are on the sn version of oil now?

 

[Eddie]

My 95 GGC 4.0 was run with M1 5w30 for all it's life in Northern ILL. Sold when I moved to FL and it is still running strong with my grandson with ~ 195,000 miles.