Originally Posted By: RageOfFury
From day one the engineers at Chrysler have recommended 5W-30. Like I said earlier, the ONLY reason Chrysler switched to 5W-20 is to get CAFE off its back. I'm sure if you talked to one of the engineers he/she would say that 5W-30 is what the Powertech engines prefer. Where am I getting my info from? Dodge and Jeep communities.
I'm sure 5W-20 is just fine, but there is a reason why the engineers at Chrysler recommended 5W-30 when the Powertech engines were released.
Anyway, let's agree to disagree?
I love to agree to disagree. It's all in fun and besides, we are just talking about oil, not heart surgery.
So lets carry this even further back. I remember when 5W-30 came, oh those rascals and their EPA rules, 5W-30 will be the end of good oils. I remember when 10W-30 and 10W-40 first came out back in the 50's. Oh those rascals, they can't make an oil do those things they say they do, rubbish. I have a good friend that should have retired from farming 20 years ago, but he can still climb upon his tractor. Runs a very large potato farm here in WI. Winter its either 10W or 20W and in the summer it's 30W or 40W. Not going to use none of that new thin 15W-40 junk.
Now 0W-20 is starting to come out and I can't wait when 0W-10 is introduced for factory fill. All heck will break loose.