I purchased 3 quarts of Redline MT-90 for my transmission and 2 quarts of Redline 75W90 for my differentials. I went to the Mitsu dealership to have the tranny and differentials changed with the Redline.

The Mitsu service guy drained my tranny and diffs.

He then "accidentally" mixed 2 quarts of the 75W90 with 1 quart of MT-90 I was there when he did it and he wasn't paying attention. He said it should not be a problem. He filled the differentials with the mixture. He had a quart of the "mixture" left because the diffs only take 2 quarts....He added the remaining 2 quarts of MT-90 to the 1 quart of the "mixture" and put that in for my transmission

Is there going to be a problem running this "mixture"???

 

dunno but i would make the guy pay for new oils and redo the change for free for being stupid

 

He is correct. If they are going to threaten loss of warranty over not using Mobil 1; they should replace your fluids with the proper mix and pay for the materials as well. They did it wrong; they should redo it.

Mark
www.Quantum-Racing.com

 

I talked to the Service Manager while I was there and his comment also was "it shouldn't hurt anything". I haven't yet asked him to buy me new oils and replace them for free. Something tells me he'll give me a hard time because there "shouldn't be a problem" Is there someone over his head I can get ahold of?!?

 

They owe you about $45.

 

Bump

 

Just think, if you were'nt standing there, you would never know. How scary is that??

I do as much work on my car as possible so that I can avoid other morons mistakes....

 

Hi, apparently the MT 90 is a thicker fluid than the the 75W-90, so in this case you are looking at a mixture with different coefficient of frictional properties for the proper synchronization and proper shifting over the different temprature ranges.
In your case I will suggest before going back to the Mitsu dealer call Red Line Synthetic Oil Corp. at (707)745-6100 and ask them to send you a fax with info on the use of both fluids and their opinion on the mixing both fluids (how does will affect the car performance). Then go with that info and ask them for a refund or free change of the fluids.

Thanks

Andy

 

That sounds like a great idea!! Thanks for the info

 

N/P

Andy

 

LOL now you will learn from your mistakes and do it your self... hehe. I would make them flush it and replace it!

 

LOL, yea no kidding!! Who was I to think a Mitsu certified tech could read bottles with different lables

 

Well...I talked to the GM and he conferred with the Service Manager. They will be buying me new Redline fluids and draining the old/replacing with the new Hopefully this thime they get it right

 

That is some great news. Make sure that they will do it right this time.

Andy