2001 manual trans fluid
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
2001 manual trans fluid
In the process of doing trans and diff fluid change. Diff was easy to track down. 88862624.
however, trans has been more difficult.
my previous invoices from 2010 and 2014: 88862155. Which from my research is still sold by gm.
called the dealer today to double check that part number and they told me they don’t use that anymore. They use: 88861800
reached out to the master of the forums, ET aka Evil twin and he recommends: 88865602
I’m going with ET. Careful of those dealers out there.
(and yes I know about AMSOIL. And no I don’t want to use it. Thanks)
I have no idea the differences. Hopefully someone smarter than me can chime in.
however, trans has been more difficult.
my previous invoices from 2010 and 2014: 88862155. Which from my research is still sold by gm.
called the dealer today to double check that part number and they told me they don’t use that anymore. They use: 88861800
reached out to the master of the forums, ET aka Evil twin and he recommends: 88865602
I’m going with ET. Careful of those dealers out there.
(and yes I know about AMSOIL. And no I don’t want to use it. Thanks)
I have no idea the differences. Hopefully someone smarter than me can chime in.
Last edited by STRMLNE; Dec 26, 2019 at 07:34 PM.
Burning Brakes
Joined: Feb 2019
Posts: 1,028
Likes: 377
From: SW Ohio
Your dealer is following tremec's recommendation with the syncromesh stuff.
http://www.tremec.com/faqs.php
Fortunately the T56 can run syncromesh (gm or Pennzoil) or the appropriate Dexron compatible fluid like ET recommended. It's so easy to get wrapped up in the finding what someone says is the perfect fluid. I have Pennzoil syncromesh on the shelf ready to go in when I put my drivetrain back together..... Only because it's a tremec recommendation, but honestly it shifted super smooth and it did great with Valvoline MaxLife synthetic ATF for last year.
Anyway, the syncromesh is a manual transmission specific fluid and the Dexron VI is an ATF.
http://www.tremec.com/faqs.php
Fortunately the T56 can run syncromesh (gm or Pennzoil) or the appropriate Dexron compatible fluid like ET recommended. It's so easy to get wrapped up in the finding what someone says is the perfect fluid. I have Pennzoil syncromesh on the shelf ready to go in when I put my drivetrain back together..... Only because it's a tremec recommendation, but honestly it shifted super smooth and it did great with Valvoline MaxLife synthetic ATF for last year.
Anyway, the syncromesh is a manual transmission specific fluid and the Dexron VI is an ATF.
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
Thanks for the info. Looked a little more into this and the 88862155 on my invoices is Dexron VI atf and so is et’s part number. Not sure why the different part number since they appear to be identical. Anyways, I’ll use that since it’s already what’s in the car. Like you said, probably doesn’t matter all that much anyway. It’s just odd that different shops/dealers recommend different fluids.
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
Thanks. Yeah. But I’m an og owner. The only thing that has been in the trans in the last 20 years is dex 3 probably from factory and then dex 6 thereafter. I’ll stick with the dex 6. I’m old school. I don’t like switching fluid brands. Never had a trans leak or any issues with it so it makes it hard to switch.
Last edited by STRMLNE; Dec 28, 2019 at 07:11 PM.
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
Took the car to a very knowledgeable corvette tech the other day. He confirmed these cars 2001 and up should only get dex vi which is fully synthetic. Ac delco 10-9395. (Evil twin was correct with his recommendation. I’d tag and thank him but anytime I mention him, I get banned for 30 days. Thus, no tag, but thanks evil!)
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Drifting
Joined: Mar 2015
Posts: 1,420
Likes: 302
From: CSRA, SC
FWIW, I've had great luck with Mobil 1 and Valvoline synthetic DEX3 fluids in my c5z. The short period I tried RP I was thoroughly disgusted as when cool 1-2 shift was a no go and even when warmed up 1-2 had a little hitch it. Absolute trash fluid and I've read countless people raging about many of their fluids in several different applications.
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
FWIW, I've had great luck with Mobil 1 and Valvoline synthetic DEX3 fluids in my c5z. The short period I tried RP I was thoroughly disgusted as when cool 1-2 shift was a no go and even when warmed up 1-2 had a little hitch it. Absolute trash fluid and I've read countless people raging about many of their fluids in several different applications.
Drifting
Joined: Mar 2015
Posts: 1,420
Likes: 302
From: CSRA, SC
You say that but my freshly rebuilt trans simply did not work with RP. YMMV I can't reccomend it and if you read around there is plenty of dissatisfaction with RP products to go around.
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
Last edited by STRMLNE; Jan 28, 2020 at 01:52 PM.
Drifting
Joined: Mar 2015
Posts: 1,420
Likes: 302
From: CSRA, SC
Perhaps you are correct. But you’re changing the constants in the thread. I’m talking about stock oem non-reman trans. I can’t vouch for anyone that opens up a trans or the quality of work that was done. I had RP in my non-reman trans for 6 years (actually by mistake because my shop screwed up and didn’t listen to what I wanted.) didn’t have a single problem. Perhaps your reman trans had issues and therefore needed some very specific fluid to work correctly.
Thread Starter
Melting Slicks
Joined: Oct 2002
Posts: 2,515
Likes: 441
From: Arizona
Last edited by STRMLNE; Jan 28, 2020 at 02:26 PM.