MN_V

iTrader: (5)

I was looking at a pic of my garage and I saw my leftover fluid bottle still sitting on the shelf from when I changed the rear diff fluid. It was Pennzoil Syncromesh. I must have grabbed the wrong bottles at the store and not paid attention afterwards. Can't even remember at this point what I was thinking.

The really sad thing is this was a year and 10,000 miles ago. Funny thing is there's no symptoms or noise from diff and it has 103k miles on it. In fact I remember it got a little quieter when I changed it. Anyways, gonna change it ASAP back to a 75/90.

isis

iTrader: (1)

Be careful dude. You could be the source of the next 'it is known' Internet fad of magic fluids. At least you didn't mix it with amsoil. That's the magic ingredient in anything.

54inches

iTrader: (4)

I used water.

Fweasel

iTrader: (6)

Did you find a picture with the half full Aquafina bottle on the shelf?

MN_V

iTrader: (5)

lol. yea it's the magic stuff to keep it running strong and fast I guess.

NIKDSC5

iTrader: (10)

I would actually expect it to run quieter, but break down really, really, fast. It won't hurt the bearings as there is not much difference from transmission bearings to diff bearings other than size. Just heat and pressure is why gear oil is used. The diff (between gears) causes so much heat and pressure that gear oil is designed to hold up, where as other oils are not meant to with stand these two parameters. Thus why gear oil is like syrup.

Anyway, your problem would be how long it was ran. I would expect that synchromesh to break down in the conditions of the diff in a few thousand miles to where it starts loosing its lubricity, and may start causing damage to the bearings. Either way, at least it wasn't a 9" or 8.8!! Good luck!

ZEEYAL8R

blah, just switch it out, i doubt you did any harm.....hell in a pinch up here, we run automatic transmission fluid in the chain drive gear cases of our snowmobiles, some people run exclusively ATF, i know its different conditions, the sled is probably more severe IMO. your probably just fine.

MN_V

iTrader: (5)

thanks. it's coming out this weekend. If anything looks goofy I'll let ya know.

Redline 75W90 going in.

MN_V

iTrader: (5)

Swapped it out tonight. You can see below the old stuff looked pretty beat and destroyed. I want to make sure the LSD works fine still but otherwise the diff has no noise and no metal to speak of came out with the old fluid.

Here's a sample of the new Redline I put in (in a dirty cup). 75W90. Has friction modifier built in so does not need anything else according to redline for the LSD.


Here's the Synchromesh I took out. It was still oily but.... just needs some creamer and you've got a latte.

meatyCTS-V

This was how my Transmission Fluid came out lol

Got a gallon jug full of the crap now!

slowlaneblues06

iTrader: (2)

Hell that just flushed it out really good. If no metal you are fine.

BudRacing

iTrader: (3)

At least you didn't accidentally put power steering fluid in your brake master cylinder... I learned that mistake the hard way at 17.

bmylez

iTrader: (3)

Results...

BudRacing

iTrader: (3)

Brake pedal to the floor. Anything rubber that the PS fluid touched was ruined. Luckily, no accidents were caused. Those two bottles should never be placed next to each other on a shelf.

http://www.agcoauto.com/content/news/p2_articleid/251

bmylez

iTrader: (3)

Huh? P/S lines are rubber. Must be a different type?