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#4518243 - 09/16/17 10:31 PM Silverado Differentials---Not on Maintenance Sche?
lukejo Offline


Registered: 09/21/11
Posts: 404
Loc: IL
Transmission fluid,filter, and transfer case are of course listed at intervals on the maintenance schedule. However, neither differential is listed...even under severe duty out to 150,000 miles?
_________________________
'05 Corolla 285k
'09 Silverado 2500HD 6.0, 95k
'12 Camry LE 4cyl, 155k


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#4518259 - 09/16/17 11:04 PM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
Reddy45 Offline


Registered: 08/15/08
Posts: 2970
Loc: USA
Diff fluid should be changed out as needed. Every 60k miles for a leisurely driver and every 30k for anyone who tows/hauls/offroads.

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#4518263 - 09/16/17 11:19 PM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
WobblyElvis Online   content


Registered: 09/23/14
Posts: 1345
Loc: Toronto Canada
If it is necessary to change the differential fluid, it will be spelled out in the owner's manual/maintenance schedule.

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#4518269 - 09/16/17 11:42 PM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
stockrex Offline


Registered: 01/08/06
Posts: 2434
Loc: Michigan
I changed mine at 16k and 9 years made a huge difference,
drop the oil and put in a some syn, tell us how it is.
_________________________
07Ridgeline:33k,08Dmax:14k,10Fit:40k:90Toyota1Ton:88k
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#4518273 - 09/16/17 11:56 PM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
CKN Offline


Registered: 10/14/14
Posts: 3700
Loc: Utah
Originally Posted By: lukejo
Transmission fluid,filter, and transfer case are of course listed at intervals on the maintenance schedule. However, neither differential is listed...even under severe duty out to 150,000 miles?



If you asking about your Siverado-they come from the factory with synthetic grease. I changed mine out on my Silverado at 50,000-miles-and it didn't look that bad. A full half of those miles was towing my 5,500 pound travel trailer. The early change out-as standard operating procedure on BITOG is a money flush and not needed-IMHO. However-if your at 90K and it hasn't been done now is the time.


Edited by CKN (09/16/17 11:58 PM)

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#4518274 - 09/17/17 12:01 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
4WD Online   confused


Registered: 09/21/10
Posts: 6395
Loc: Texas
AAM been in the tequila down south of the border?

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#4518323 - 09/17/17 05:44 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
Silverado12 Offline


Registered: 02/26/13
Posts: 3114
Loc: Central Virginia
I had an unusual experience when I changed my 2012 Silverado rear oil with 25K miles. It came out looking almost black and looked like it should have been changed sooner. I used non-syn 80W-90 to replace the original oil. Truck has the G-80 locking differential.


Edited by Silverado12 (09/17/17 05:44 AM)
_________________________
12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
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#4518328 - 09/17/17 05:58 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
JHZR2 Offline



Registered: 12/14/02
Posts: 41789
Loc: New Jersey
My 98 S-10 had an early change listed only for the lsd. Was like 7500 miles.

I'm sure with sun fluids and all the intent for lifetime stuff, they don't give a number. Par for the course.

Personally I like the 7500 and then between 36 and 60k or by time...

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#4518337 - 09/17/17 06:30 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
Indydriver Offline


Registered: 03/20/11
Posts: 2153
Loc: Indiana
45,000 for my 420 hp 2014 Chevy Camaro.
_________________________
2017 Mazda CX3 1000 FF
2014 Camaro 2SS/RS LS3 Vert 13,000 M1
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2011 Accord VCMV6 75,000 M1
2007 Tahoe 130,000 M1 HM


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#4518341 - 09/17/17 06:41 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
zeng Offline


Registered: 09/01/15
Posts: 2188
Loc: Malaysia
Originally Posted By: lukejo
Transmission fluid,filter, and transfer case are of course listed at intervals on the maintenance schedule. However, neither differential is listed...even under severe duty out to 150,000 miles?

Manufacturers know best ??
Oh no, I wouldn't trust one.

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#4518379 - 09/17/17 07:58 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
64bawagon Offline


Registered: 01/10/17
Posts: 167
Loc: Michigan
They used to be 5000 miles initial for break in ? Not sure what it is now since I haven't bought a truck in over 12 yrs.
_________________________
05 Duramax Chevy(SOLD), 64 Chevy wagon, 10 Jeep Wrangler, 17 Equinox (rental), 18 Silverado 1/2 ton

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#4518402 - 09/17/17 08:37 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
motor_oil_madman Online   content


Registered: 11/29/09
Posts: 4858
Loc: Houston, Texas
Supposedly the 11.5 AAM will burn the paint off the diff cover towing heavy. Mine still looks new, so I don't know. I don't tow heavy though
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4518467 - 09/17/17 10:21 AM Re: Silverado Differentials---Not on Maintenance Sche? [Re: lukejo]
wog Offline


Registered: 11/19/06
Posts: 165
Loc: massachusetts
Did my differential at 105k and again at 205k no issues except for pin hole in cover at 205. No noise or clunking. Quiet grin

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#4519073 - 09/17/17 11:06 PM Re: Silverado Differentials---Not on Maintenance Sche? [Re: zeng]
CKN Offline


Registered: 10/14/14
Posts: 3700
Loc: Utah
Originally Posted By: zeng
Originally Posted By: lukejo
Transmission fluid,filter, and transfer case are of course listed at intervals on the maintenance schedule. However, neither differential is listed...even under severe duty out to 150,000 miles?

Manufacturers know best ??
Oh no, I wouldn't trust one.



Your right...the "shade tree" mechanics on BITOG know so much more than the guys who design them and put them together......

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#4519078 - 09/17/17 11:18 PM Re: Silverado Differentials---Not on Maintenance Sche? [Re: CKN]
lukejo Offline


Registered: 09/21/11
Posts: 404
Loc: IL
Originally Posted By: CKN
Originally Posted By: zeng
Originally Posted By: lukejo
Transmission fluid,filter, and transfer case are of course listed at intervals on the maintenance schedule. However, neither differential is listed...even under severe duty out to 150,000 miles?

Manufacturers know best ??
Oh no, I wouldn't trust one.



Your right...the "shade tree" mechanics on BITOG know so much more than the guys who design them and put them together......

Funny--both of you--and you each represent one side of my brain on this. I tend to lean towards over-maintaining, thanks to no small part from this forum. On the flip side, so many on here now say it's safe to trust the OLM for your OCI's on most engines...even though that is much longer than tradition OCI's. Yes, motor oil is much better now, but so is the diff fluid that GM uses. So should I trust the OLM, but assume they really got the differential maintenance wrong? Kind of a rhetorical question, but that's what plays out in my mind when wanting to do more/sooner than the manufacturer recommends.

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