Differential Fluid Change Or Addition?

neto1978 · February 17, 2011

Silverado 2008 - 60k miles.

Light use, few 4x4 time operation.

no leaks at differential housings.

When is time to change or add fluid?

tks.

vettelovralexand · February 17, 2011

I would check the level if you never have (Spec says between .4 and .75 inches below the fill plug). Earliest I would worry about a change until 100k if you don't tow, but I would be thinking about it by now (50k) if you tow heavy on a regular basis.

redvett · February 17, 2011

Check the owners manual for maintenance schedule.

vettelovralexand · February 17, 2011

Check the owners manual for maintenance schedule.

The differential isn't in mine. I did check.

jro909 · February 18, 2011

100k...its synthetic so it will last alot longer then the pig fat of yesteryears...hell i know people that tow daily and have never checked it lol

neto1978 · February 18, 2011

If I wanted to take a look at the manual, I would.

Don´t loose your time answering to questions you may think we can find at manuals!

Check the owners manual for maintenance schedule.

mc7719 · February 18, 2011

Actually the differentials maintenance interval isn't IN the manual. At least not in mine. It just says the type of fluid, not how often to change it.

When you say 100k, us that mi. or kms? And also it lists only the rear diff is synth., so does that mean it can go longer between changes? Why would both front and back use the same? Can they?

jro909 · February 18, 2011

Actually the differentials maintenance interval isn't IN the manual. At least not in mine. It just says the type of fluid, not how often to change it.

When you say 100k, us that mi. or kms? And also it lists only the rear diff is synth., so does that mean it can go longer between changes? Why would both front and back use the same? Can they?

i'm positive synethic is in the rear...i'm not for sure if synthetic comes from the factory in the front...you can run synthetic in both ends though...100k= 100,000 miles and yes synthetic can go longer back in the day the front diff wasen't synthetic because it wasen't constantly in use but they may have changed it now

K1500Tech · February 18, 2011

I personally changed mine at 50k

vettelovralexand · February 18, 2011

I personally changed out the differential fluids and transfer case factory filled fluids after about 7k of break in. With the duty cycle my truck sees though, I should not have to change them for another 100k.