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Synthetic vs. Multi-Purpose Fluids - NOT OIL QUESTION
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=88&t=91138		 Page 1 of 1
Author:  JeepLibertyKK [ Fri Mar 27, 2020 4:32 pm ]
Post subject:  Synthetic vs. Multi-Purpose Fluids - NOT OIL QUESTION
I'v been dragging my feet getting all the necessary fluids for some maintenance work on my 2012 Jeep KK and 2003 Suburban, both four-wheel drives. Some of the fluids match up viscosity-wise, but not necessarily fluid type. For example, the older Suburban recommends 'synthetic' products for the front and rear axles but the Liberty states 'SAE 75W-90 Gear Lubricant' and 'SAE 80W-90 Multi-Purpose API GL-5 Gear Lubricant' as opposed to 'SAE 80W-90 Synthetic Axle Lubricant' for the Suburban.

I've always assumed that in these types of applications, synthetic is acceptable. But I don't want to assume and then do long-term damage to any Liberty components.

Your experience and recommendations would be appreciated!

Thank you.
Author:  kulardenu [ Sat Apr 04, 2020 4:10 pm ]
Post subject:  Re: Synthetic vs. Multi-Purpose Fluids - NOT OIL QUESTION
Wondering the same. Going to change differential in a high mileage KK wondering what is best lube for that and grade.
Author:  WWDiesel [ Sat Apr 04, 2020 10:50 pm ]
Post subject:  Re: Synthetic vs. Multi-Purpose Fluids - NOT OIL QUESTION
75W90 Synthetic Gear Oil for normal everyday driving
75W140 Synthetic Gear Gear Oil if you do any towing or live in a very hot environment and want a little extra protection.

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Author:  My66dodge [ Sun Apr 05, 2020 9:23 pm ]
Post subject:  Re: Synthetic vs. Multi-Purpose Fluids - NOT OIL QUESTION
We use lots of 75w140 at my shop it lasts a LOT longer... we only use 75w90 in the euros and aisians


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