Your Oil Recomendation

The answers to all your questions are already deep in this thread. No need to answer them again, just start at the first post and read ALL the posts again.
 
After all this reading about oil... what's best for a 93 auto w/212k on the clock but had a rebuild at 150k miles? Need to do an oil change soon. Climate here can get down to the low teens and during the summer 100+.

Saw lots of good things about Mobil 1 high mileage...gots a rear main seal leak and not sure about any other leaks.
 
If you have a 4.0, I wouldn't stress to much about oil...
I completely rebuilt my jeep over a 3 month period and forgot I drained the oil to change the oil pan gasket since it was the first of many things I did. I ran it for a good 20 minutes while bleeding the breaks before the motor stalled. Once I put oil in (Advanced auto cheap crap) and it fired back up and ran mint. 15,000 miles later She pur's like a kitten still with Amsoil 10w-40. My old cherokee beater I ran it for 65,000 miles and changed the oil every 10,000 miles with advanced auto oil. It was a beater I bought for 300 bucks so I just wanted to push the limits. I sold it without a knock, just the ever popular 4.0 wrap/tick.
 
I would NEVER run an engine 10,000 miles on cheap oil, heck I refuse to run my 4.0 for more than 8,500 on Castrol Edge(will soon be changing brands of oil)

I found this: http://www.redlineoil.com/content/files/tech/Motor Oils MSDS.pdf

Very very interesting, read the part of the MSDS that states the zinc content.

Redline Motor oil has 0.6-1.2% Zinc compounds containing 0.12% Zinc.

Thats technical speak for 1200ppm of ZDDP in redline oil.

MSDS are REQUIRED to contain certain data AND to be readily available to the public, they're a great way to find out some of the "proprietary" ingredients in various products, in this case motor oil.
 
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