FRICTION MODIFIERS? How To Change Differential Fluid [REAREND GREASE]

Knowing what type of lube to run in your gears is half the problem. The other we half we tackle by showing you how to change differential fluid. This task remains about the same, regardless of what type of differential you're dealing with. What does change is which type of lube that you use. We're changing the lube in a 2003 Silverado 1500HD, so it's running a G80 limited-slip differential. In this rearend, if you're running synthetic oil, then you really don't need to add friction modifiers like an LS additive. Furthermore, these truck G80 diffs only require GL-5 lubricant without additive, since the locking mechanism works different than the typical posi-traction rearends in Muscle Cars.

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[johncranford]

I wouldn't mind paying this guy. Awesome walk through

[mdruryscs]

Thanks for showing what a differential is and the different types of fluids available. I now have a clue what a "differential service" means in my auto service manual.

[btm]

Got more info that I needed, I have a g80 and right now in Aamco for chatter and harsh engagement I believe is fluid additive related, but now it sounds as though it may be resolved with a proper fluid change, great video and great information, plz touch base on how modifiers can either change or harm the g80 for people like me, lots of us out there

[robertfrate]

Hi Tim, very impressive video, I’ve always used permetex instead of a gasket and never leaked, your better than me I can’t work without a radio I don’t like quiet, everyone different lol, nicely done,

[stans]

ALWAYS take out [or just loosen it] the fill plug before anything else.
If you can't get it out to refill the fluid, you're in a heap load of trouble.

[vhsgenesis]

When it comes to additives. How much of the additive do you add?

[douglasthompson]

Aren't you going to put the brackets back before bolting it down?

[danr]

Losen the fill plug first, if you can't open it, you are in big trouble after you drain the oil.

[frontspring]

That's about as good as you can do this job, besides the broken diff bolt.

[MrSupernova]

Bro, amazing walkthrough! I've never seen this process done before although it looks simple. Question, how important is it to do change the differential fluid on a regular car like an Accord or Camry? At what kind of time/mileage intervals should this be done? Thanks!!

[weeklyone]

I don't know what I hate more, getting grease on my hands or my tools!

[thepubliceye]

You don't do this very often do you?

[TsunauticusIV]

Thought this was going to be a video about friction modifiers. 😂

[weeklyone]

Obsessive-compulsive personality disorder (OCPD) is a personality disorder that's characterized by extreme perfectionism, order, and neatness.