Which differential fluid?
Fleet Owner
Joined: Dec 2009
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From: NorCal
Original gears? - 75w-90 dinosaur-based gear oil. If the rear axle has been rebuilt in the recent past - Royal Purple synthetic... you'll need 2 quarts. Valvoline offers 75w-90 with limited slip additive already incorporated.
Towing? Lucas Oil 75w-140 synthetic.
Towing? Lucas Oil 75w-140 synthetic.
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Elder User
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[quote=HIO Silver;11963028]Original gears? - 75w-90 dinosaur-based gear oil. If the rear axle has been rebuilt in the recent past - Royal Purple synthetic... you'll need 2 quarts. Valvoline offers 75w-90 with limited slip additive already incorporated.
Towing? Lucas Oil 75w-140 synthetic.[/quot
Not sure if i have a limited slip differential I like lucas products and not quite as expensive as royal purple. Would I have to get an additive if i used lucas, how much additive would I need..People at the parts store are absolutely no help. Would the valvoline work as good as the lucas oil, thanks.
Towing? Lucas Oil 75w-140 synthetic.[/quot
Not sure if i have a limited slip differential I like lucas products and not quite as expensive as royal purple. Would I have to get an additive if i used lucas, how much additive would I need..People at the parts store are absolutely no help. Would the valvoline work as good as the lucas oil, thanks.
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[quote=HIO Silver;11964003]Four ounces for a 9-inch.
If you're not sure if you have limited slip, get the Valvoline gear oil since it is already formulated with it.
Your call on Valvoline or Lucas. I use both.[/qu
I have to return some spring compressors in the morning, finallly got front rear sway bars and new coil springs on. Guess I will pick up some valvoline while I'm there. Thanks!
If you're not sure if you have limited slip, get the Valvoline gear oil since it is already formulated with it.
Your call on Valvoline or Lucas. I use both.[/qu
I have to return some spring compressors in the morning, finallly got front rear sway bars and new coil springs on. Guess I will pick up some valvoline while I'm there. Thanks!
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
Just to offer a different O, straight cheep 90 wt. gear oil has worked very well for 60 + years now. Some folk have extra jingle in their jeans for the pricey stuff, if you are one of them go for it.
For the masses it's no better. My O.
John
For the masses it's no better. My O.
John
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I was thinking sythenic you don't think it's better or llongevity is better? Thanks
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Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
If you will sleep better at night knowing you spent more money on synthetic please do.
John
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Well advance had the mobil LS synthetic in the wrong spot priced at 10.99 actual price was 18.99 so I just when with valvoline at 6.99. I would have liked to try the synthetic but at that price don't think it is that much better. Thanks for the help!
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