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07-19-2011, 08:33 AM
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#1 |
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Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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Synthetic or Regular Differential Oil
Is it ok to put Synthetic in my differential after it has been running fossel based, regular oil for so may years? I heard it will looseen seals, cause leaks, etc.. if you switch midway through with any engine.
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07-19-2011, 09:25 AM
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#2 |
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Senior Member
 
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: Synthetic or Regular Differential Oil
Some reading for you ...
fluids/oils/gear lube http://67-72chevytrucks.com/vboard/s...d.php?t=177957 someone please tell me this guy is full of BS http://67-72chevytrucks.com/vboard/s...d.php?t=378304
__________________
A husband can be right...or...A husband can be happy.  67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk.  1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc   JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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07-19-2011, 09:26 AM
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#3 |
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Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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Re: Synthetic or Regular Differential Oil
Thanks
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07-19-2011, 09:30 AM
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#4 | |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: Synthetic or Regular Differential Oil
Quote:
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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07-19-2011, 09:42 AM
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#5 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Synthetic or Regular Differential Oil
synthetc oil is the best thing you can do for your diff.
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07-19-2011, 09:56 AM
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#6 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Synthetic or Regular Differential Oil
i use synthetic lubrication in everything motor tranny rearend and also wheel bearings// have had noticable increase in milage and slightly more performance in my real world test uses
the last two new GM vehicles i got came with synthetic right from the GMfactory//2004silverado and 2008 HHRss
__________________
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 |
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07-19-2011, 10:13 AM
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#7 | |
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20' Daredevil (Ret)
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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Re: Synthetic or Regular Differential Oil
Quote:
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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07-21-2011, 03:12 PM
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#8 |
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Registered User
Join Date: Apr 2010
Location: Boise, ID
Posts: 1,280
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Re: Synthetic or Regular Differential Oil
Right on, synthetic it is. Thanks!
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07-21-2011, 03:31 PM
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#9 | ||||
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"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,971
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Re: Synthetic or Regular Differential Oil
Unless it has a positraction rearend. Some Synth oils aren't compatible with a positraction diff. Or the other way around...
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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07-21-2011, 03:35 PM
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#10 | |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Synthetic or Regular Differential Oil
Quote:
__________________
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 |
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07-21-2011, 08:16 PM
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#11 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Synthetic or Regular Differential Oil
yeah... I've never heard of that one. Sounds like yet another one of the millions of myths about synthetic oils.
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07-21-2011, 09:27 PM
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#12 |
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Grandpa in the rustmobile...
Join Date: Nov 2008
Location: Spokane WA/Viola TN
Posts: 11,422
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Re: Synthetic or Regular Differential Oil
great my parts guy told me synthetic is a fluke and i put dino in my diff lol
__________________
John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4 |
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07-21-2011, 10:50 PM
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#13 |
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Eat, Sleep, Drive a Chevy
Join Date: Apr 2010
Location: the town of the cow, Texas
Posts: 1,152
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Re: Synthetic or Regular Differential Oil
I am running Redline Heavy Shockproof in my rear, its a posi and did not do the additve as directed by the shop that built the rear. The owner told me he tested diffrent brands at the track and the Redline proved to run cooler thus working better to reduce friction
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Trey Silence may be Golden, but Duct Tape is Silver! 72 Short Step 57 "big window" short step |
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