1968 C10 Differential Capacity - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jwbchevy502 · 07-17-2011, 02:40 PM

Changing the oil in the differential. I believe I have a stock setup with 3:73 gears. Looking to know if anyone knows the capacity and should I use a synthetic or not?

Wrenchbender Ret · 07-17-2011, 03:09 PM

It will take 4 pints. I dont use synthetic. I dont think its worth the extra money. A GL-5 rated gear lube is all you need.

jwbchevy502 · 07-17-2011, 03:13 PM

Thanks, I have the synthetic on hand so no issue. Thanks for the help

cdowns · 07-17-2011, 03:51 PM

synthetic is far superior and well worth the money i run synthetic in engine tranny rearend and wheel bearings // it makes a true positive increase in gas milage and these trucks need as much help as possible when it comes to gettin better milage

ubtripn · 07-17-2011, 04:07 PM

I thought that if somebody switched to Synthetic after already using fossil based oil that it causes leaks by softtening the seals or something. Is that true?

07-17-2011, 02:40 PM	#1
jwbchevy502 Registered User Join Date: Mar 2011 Location: Allen, Texas Posts: 44	1968 C10 Differential Capacity Changing the oil in the differential. I believe I have a stock setup with 3:73 gears. Looking to know if anyone knows the capacity and should I use a synthetic or not?

07-17-2011, 03:09 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,207	Re: 1968 C10 Differential Capacity It will take 4 pints. I dont use synthetic. I dont think its worth the extra money. A GL-5 rated gear lube is all you need.

07-17-2011, 03:13 PM	#3
jwbchevy502 Registered User Join Date: Mar 2011 Location: Allen, Texas Posts: 44	Re: 1968 C10 Differential Capacity Thanks, I have the synthetic on hand so no issue. Thanks for the help

07-17-2011, 03:51 PM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: 1968 C10 Differential Capacity synthetic is far superior and well worth the money i run synthetic in engine tranny rearend and wheel bearings // it makes a true positive increase in gas milage and these trucks need as much help as possible when it comes to gettin better milage __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-17-2011, 04:07 PM	#5
ubtripn Registered User Join Date: Apr 2010 Location: Boise, ID Posts: 1,280	Re: 1968 C10 Differential Capacity I thought that if somebody switched to Synthetic after already using fossil based oil that it causes leaks by softtening the seals or something. Is that true?



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