I know the Jeep 4.0 oil topic is pretty beat to death on the Jeep forums but I trust these answers a lot more!
Going to do an oil change on mine within the next few weeks. Right now I have Pennzoil HM 10w40 in it, it was on sale at Walmart and before that it was Pennzoil HM 5w30 for winter. Seems to have helped the leaks. Don't want to run Pennzoil HM again because my local Walmart doesn't stock individual quarts of it in weights besides 5w20/30 and I don't want to pay $8 for the extra quart at an autopart store (takes 6 quarts). Furthermore, if I change the oil now, it likely won't hit 4-5k miles before we get single digit temps starting in December/ January. So I don't think 10w40 would be the best choice. However, with July and August coming, 100 degree temps are possible too. I guess my question is, what would be a good weight that would suit the timeframe of this OCI? The manual says 5w30 from below 0-60F, 10w30 from 10-100+. Mine has 133k miles on it.
Walmart here stocks Maxlife in all the popular weights. Is there such a thing as a 5w40 Maxlife?
Sorry for the diatribe!
Going to do an oil change on mine within the next few weeks. Right now I have Pennzoil HM 10w40 in it, it was on sale at Walmart and before that it was Pennzoil HM 5w30 for winter. Seems to have helped the leaks. Don't want to run Pennzoil HM again because my local Walmart doesn't stock individual quarts of it in weights besides 5w20/30 and I don't want to pay $8 for the extra quart at an autopart store (takes 6 quarts). Furthermore, if I change the oil now, it likely won't hit 4-5k miles before we get single digit temps starting in December/ January. So I don't think 10w40 would be the best choice. However, with July and August coming, 100 degree temps are possible too. I guess my question is, what would be a good weight that would suit the timeframe of this OCI? The manual says 5w30 from below 0-60F, 10w30 from 10-100+. Mine has 133k miles on it.
Walmart here stocks Maxlife in all the popular weights. Is there such a thing as a 5w40 Maxlife?
Sorry for the diatribe!
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