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Service Intervals For Differential Fluid


vhbigman

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What are the capacities of the front and rear differiental and what is the part number for the front diff fluid and does it require and additive.

thanks

 

 

 

I don't remember what the manuals calls for and I am too lazy to look it up for you.

 

For my personal truck. I changed the diff fluid out @ 1500 miles to get shavings out. Then sense I tow I change it yearly.

 

GM uses a synthetic fluid. You can use Mobil 1 75/90 or Castrol synthetic 75/90. Or what ever your favorite synthetic gear oil might be. Gm DOES NOT require an additive for the Eaton G80 locker. The G80 is not a limited slip so requires nothing but gear oil. But I have a 2 wheel drive. I believe GM says to use their fluid in the front diff. Some one correct me if I am wrong.

 

Have a good one,

 

Don

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I don't remember what the manuals calls for and I am too lazy to look it up for you.

I love your sense of humor Don.

 

Many manufacturers recommend changing at least every 60K miles. I've never let mine go that far. I change mine about every 30K when I do the trans fluid. (but I don't tow much)

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I don't remember what the manuals calls for and I am too lazy to look it up for you.

 

For my personal truck. I changed the diff fluid out @ 1500 miles to get shavings out. Then sense I tow I change it yearly.

 

GM uses a synthetic fluid. You can use Mobil 1 75/90 or Castrol synthetic 75/90. Or what ever your favorite synthetic gear oil might be. Gm DOES NOT require an additive for the Eaton G80 locker. The G80 is not a limited slip so requires nothing but gear oil. But I have a 2 wheel drive. I believe GM says to use their fluid in the front diff. Some one correct me if I am wrong.

 

Have a good one,

 

Don

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I don't remember what the manuals calls for and I am too lazy to look it up for you.

 

For my personal truck. I changed the diff fluid out @ 1500 miles to get shavings out. Then sense I tow I change it yearly.

 

GM uses a synthetic fluid. You can use Mobil 1 75/90 or Castrol synthetic 75/90. Or what ever your favorite synthetic gear oil might be. Gm DOES NOT require an additive for the Eaton G80 locker. The G80 is not a limited slip so requires nothing but gear oil. But I have a 2 wheel drive. I believe GM says to use their fluid in the front diff. Some one correct me if I am wrong.

 

Have a good one,

 

Don

 

thanks

v

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