Oil & Maintenance

[LIVELY5R]

Hey guys!
I'm doing preventative maintenance on the 1980 CJ7 tomorrow. I'm in central Texas so temps range from 30-105. I mainly drive 5 miles of road & roam the pastures & river bottom. What oil would you recommend? I've searched the forum & saw Rotella & other suggestions but mainly wanted to pic y'all's brain for the best. I'm going to replace all the other fluids as well so any advice would be welcome.
It's pretty much stock with inline 6, SR4 Transmission , & stock everything else.

 

[Hedgehog]

I have started using an oil that is made for racing/older engines called Brad Penn, I'm a thick oil believer so it's 20-50, but lighter weights are available. Check your local hot rod shop. For my gear boxes Lucas Gear oils are about all I ever use.

 

[Lumpy Grits]

All I have ever run in my jeep's engine is Castrol 20W-50.
I use only Wix filter too. Get'em at NAPA
LG

 

[Torxhead]

I use Rotella, the other oils mentioned are good also, plus Valvoline is good too. I am also a fan of the Wix oil filter. The main thing is just to have a good maintaince schedule and stick with it. When I first got my CJ, I started using Pennzoil until I pulled the valve cover off and was quite surprised to see a lot of sludge on top. So, no more of that stuff, but from what I hear their oil has changed.

 

[jdcaples]

Perhaps only because I have a very few more quarters than sense, I have been running Amsoil Zrod 20w-50 in the warmer months and 10w-30 in cooler ones. Something about flat tappets, zinc, phosphor - zinc dialkyldithiophosphate, or ZDDP - not having a catalytic contraption.....

Is it worth it? I don't know, just makes be feel like I am reducing wear where I can. Apparently the stuff will trash a cat, though.

There was a time that diesel engine oils were favored lubes because they trapped soot so well. I ran them in both diesel and gas engines all through the 80s. They also didn't build sludge cakes under the intake manifolds.

Now a days all modern oils are engineered to protect emissions systems and great older diesel lubes don't work well with modern diesel selective catalytic reduction (SCR) systems, so we all get to suffer as engine wear and longevity take a back seat.


-Jon

 

[LIVELY5R]

Thanks everyone! I picked up Rotella & other goodies from Napa & was able to do mostly everything I wanted. Thanks so much for all the help!

 

[007]

Thanks everyone! I picked up Rotella & other goodies from Napa & was able to do mostly everything I wanted. Thanks so much for all the help!

Drain a quart out and put in a quart of Lucas Oil Stabilizer. SWEAR by it.

 

[Lumpy Grits]

Drain a quart out and put in a quart of Lucas Oil Stabilizer. SWEAR by it.

Then you have read the tests that prove other wise then.
Easy search-
STP does far better.
LG