This is in relation to a question about what kind of gear oil I can use in my Polaris ATV.
https://bobistheoilguy.com/forums/ubbthreads.php/topics/4383903/Re:_Polaris_lubricant_equivila#Post4383903
My Fiat Spider requires GL-1 90 weight transmission oil. From my understanding GL-1 is a straight mineral oil without any of the harmful additives found in GL-5. If you use GL-5, the sulfur it will eat the brass syncronizers. GL-1 can be hard to find at autopart stores because it's not typically an automotive transmission oil. It is mainly used in old tractors like Fords for example. However you can find it at just about any tractor dealer or Tractor Supply.
The rear differential does require GL-5, 80W90 (or something like that).
My Yugo can use 40 weight engine oil (I've never actually seen it to be honest) or GL-1 90 which has roughly the same viscosity.
However the Yugo is front wheel drive and has the differential built into the transmission so it shares the same oil.
So tell me why are you supposed to use GL-5 in just a differential on a rear wheel drive car, but if the car is front wheel drive, your not supposed to use GL-5? Does that make any sense?
If there a difference between a RWD and a FWD differential?
Why use GL-5 period in a differential?
As mentioned in another post, if I encounter a gearbox (like on a mowing machine that attaches to a tractor) and I have no idea what kind of lube to use, I always use GL-1 90. Simply because it's supposed to be a straight mineral oil with no harmful additives that might destroy anything made of brass.
By my Citroen 2CV requires GL-4 80W90 which contains no sulfur additives found in GL-5. It's also front wheel drive. This stuff is really hard to find in the United States. I have to order it specially from a Citroen parts supplier or Amazon.com.
So what's is the difference between GL-4 and GL-1?
https://bobistheoilguy.com/forums/ubbthreads.php/topics/4383903/Re:_Polaris_lubricant_equivila#Post4383903
My Fiat Spider requires GL-1 90 weight transmission oil. From my understanding GL-1 is a straight mineral oil without any of the harmful additives found in GL-5. If you use GL-5, the sulfur it will eat the brass syncronizers. GL-1 can be hard to find at autopart stores because it's not typically an automotive transmission oil. It is mainly used in old tractors like Fords for example. However you can find it at just about any tractor dealer or Tractor Supply.
The rear differential does require GL-5, 80W90 (or something like that).
My Yugo can use 40 weight engine oil (I've never actually seen it to be honest) or GL-1 90 which has roughly the same viscosity.
However the Yugo is front wheel drive and has the differential built into the transmission so it shares the same oil.
So tell me why are you supposed to use GL-5 in just a differential on a rear wheel drive car, but if the car is front wheel drive, your not supposed to use GL-5? Does that make any sense?
If there a difference between a RWD and a FWD differential?
Why use GL-5 period in a differential?
As mentioned in another post, if I encounter a gearbox (like on a mowing machine that attaches to a tractor) and I have no idea what kind of lube to use, I always use GL-1 90. Simply because it's supposed to be a straight mineral oil with no harmful additives that might destroy anything made of brass.
By my Citroen 2CV requires GL-4 80W90 which contains no sulfur additives found in GL-5. It's also front wheel drive. This stuff is really hard to find in the United States. I have to order it specially from a Citroen parts supplier or Amazon.com.
So what's is the difference between GL-4 and GL-1?
