Proper Fluids for a 1978 Jeep Cherokee?

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Santeh
Posts: 182
Joined: Mon Jun 26, 2017 9:11 pm

Proper Fluids for a 1978 Jeep Cherokee?

Post by Santeh »

Hello all,

I now have a 1978 Jeep Cherokee with an AMC 360 V8 that has an Edelbrock 4-barrel carb in it. However I was told that when it was shipped to me that it was leaking a bit and the shippers thought it might be transmission fluid. I know that these older Quadratrac FSJ need the TCL-1 for the transfer case (please see https://www.quadratec.com/products/5...RoCYCAQAvD_BwE), yet I was curious what is felt to be a recommended, good quality engine oil and transmission fluids for this 1978 Jeep Cherokee?

I read through the 1977 Cherokee manual (I could not find the 1978), as well as the correct Chilton guide, and the '77 manual did note to use either 10W30 or 10W40. I did, though, find online that others are using 15W40 Rotella for the engine oil (https://www.pepboys.com/product/details/522009/00124) so I might try that. Yet I live in a hot and humid climate (30-40F in winter and 90-100F in summer before the heat index) thus do you know if the 15W40 would be okay in this particular AMC 360 with an Edelbrock 4-barrel carb?

As for transmission oil, I was also able to find Dexron transmission fluid at Pep Boys (https://www.pepboys.com/product/details/8545657/00124) which I understand to be the correct type.

Thanks all for the help and suggestions!

Thanks all!
1978 Jeep Cherokee S; 5.9L/360 V8 automatic/FiTech fuel injection and Davis Unified Distributor systems.
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REDONE
Posts: 2678
Joined: Tue Sep 13, 2011 5:48 pm
Location: Lakewood and Bailey, CO

Re: Proper Fluids for a 1978 Jeep Cherokee?

Post by REDONE »

:funnypost: Holy crap! It happened again! Someone asked about engine oil... Sincerely!! :P

I'll start by saying any 10w-40 oil you choose ( I like Castrol) with a bottle of STP or O'rielly's oil additive for the ZDDP that isn't in modern oil for the flat tappet lifters your engine has.
Use any filter you like that isn't made by Champion Labs and you're good to go. Wix and Purolator are both made by Mann, Wix was synthetic media and Purolator has natural media. Of the two I use Purolator because our engines have the clearance to handle micron level particulate, so I'd rather more oil go through the filter to get the big stuff, rather than the media plug up with small stuff and then bypass all together.
79 J-10 (Honcho Mucho) KE0LSU
304/Performance Fuel Injection TBI/MTA1/SP2P/Magnum rockers
T18/D20/D44s&4.10s/33" Mud Claws
Grizzly Locker Rear
4" front spring drop, 5" rear shackle flip
Chevy style HEI (ECM controlled)
Dolphin "Shark" gauges in a fancy homemade oak bezel
3/4 resto, rotting faster than I've been fixing it.
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