6 speed
Thread Starter
Pro
Joined: Oct 2011
Posts: 703
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From: leesburg fl
St. Jude Donor '12
6 speed
My 90 vert has a 6 speed with 33000 miles. I think its time to change the fluid.I have read a lot of post on the forum as far as miles and time to change the fluid. Im thinking BMW oil may be the best. Does anyone have a picture of the plug that has to be removed? or will I see it when I get under the car. The dealer here in town wants 137.00 to change transmission fluid. I dont like giving them money but from reading I need to buy a pump and oil so it may be worth it. Im not in a hurry but can you guys give me some idea of witch way to go
Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05
I have not used BMW oil
Pennzoil Syncromesh can be had at Pep Boys. The pump that screws on the bottle can be had at the auto parts store for $5.
Get 3 qts youll use a touch over 2 if memory serves right
Youll see the drain plug
MAke sure you can get the fill plug out first they stick a little.
Easy job
Pennzoil Syncromesh can be had at Pep Boys. The pump that screws on the bottle can be had at the auto parts store for $5.
Get 3 qts youll use a touch over 2 if memory serves right
Youll see the drain plug
MAke sure you can get the fill plug out first they stick a little.
Easy job
Racer
Joined: Jan 2007
Posts: 380
Likes: 1
From: Toronto Ontario
You'll need a 17mm hex wrench to get the plug out. I did mine last winter using Amsoil...great product bought from a vendor on this forum. If you have the car jacked up you may as well do the rear end while your under there.
Drifting
Joined: May 2005
Posts: 1,336
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From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
Drain plug and fill plug are the same size.
As said earlier, make sure you can remove the fill plug on the passenger side before draining the old oil.
I have used the following oils:
BMW 10W60
Amsoil Synchromesh for Manual Transmissions
They both seem to do a good job. Could not say that one was better than the other.
As said earlier, make sure you can remove the fill plug on the passenger side before draining the old oil.
I have used the following oils:
BMW 10W60
Amsoil Synchromesh for Manual Transmissions
They both seem to do a good job. Could not say that one was better than the other.
Race Director
Joined: Oct 2005
Posts: 11,759
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From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
All good advice above.
PLRX posted a detailed thread with pictures when he changed his fluid.
http://forums.corvetteforum.com/c4-g...il-change.html
PLRX posted a detailed thread with pictures when he changed his fluid.
http://forums.corvetteforum.com/c4-g...il-change.html
Drifting
Joined: May 2005
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From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
Remember to drive your Vette in order to bring the temperature of the transmission oil up.
Melting Slicks
Joined: Jul 2005
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I've used Red Line MTL with very good results.
You'll need a 17mm Hex wrench to remove the plug - I was able to get mine at Sears. As others have said remove the fill plug on the side of the tranny first then remove the drain plug at the bottom. Even when torqued properly - those plugs can be tight - you might want to find a 12" - 18" long piece of pipe to fit over the hex key...
There are a number of ways to refill the tranny - the pump option is probably the best one if you're working alone. If you'll have a friend or two around - a flexible hose can be used to feed the fluid down from the top of the car to the fill port.
It's not a hard job, but count on spilling some trans fluid when refilling (read that as wear old cloths and put something down to protect the floor.)
GOOD LUCK
You'll need a 17mm Hex wrench to remove the plug - I was able to get mine at Sears. As others have said remove the fill plug on the side of the tranny first then remove the drain plug at the bottom. Even when torqued properly - those plugs can be tight - you might want to find a 12" - 18" long piece of pipe to fit over the hex key...
There are a number of ways to refill the tranny - the pump option is probably the best one if you're working alone. If you'll have a friend or two around - a flexible hose can be used to feed the fluid down from the top of the car to the fill port.
It's not a hard job, but count on spilling some trans fluid when refilling (read that as wear old cloths and put something down to protect the floor.)
GOOD LUCK
Thread Starter
Pro
Joined: Oct 2011
Posts: 703
Likes: 76
From: leesburg fl
St. Jude Donor '12
Thanks a lot guys, That seems easy I may do it this weekend. Now do you use the same oil in the rear end? Someone posted while under the car change the oil in the rear aswell. I think our napa has amsoil.
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Drifting
Joined: May 2005
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From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
NO! Differential fluid is not the same as manual transmission fluid.
Go to the Amsoil website and input the info about your Vette.
You will get a full page of specifications and capacities for every fluid on your Vette.
If you do a Search here on changing the differential fluid you will find tons of information and pictures.
Go to the Amsoil website and input the info about your Vette.
You will get a full page of specifications and capacities for every fluid on your Vette.
If you do a Search here on changing the differential fluid you will find tons of information and pictures.
Melting Slicks
Joined: Sep 2008
Posts: 2,376
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From: Cherokee National Forest TN
In addition to gear oil for the rear you will need a bottle of GM posi additive.
You also need a suction pump to pull the old gear oil out, the rear diff does not have a drain plug.
A flood light or heat lamp placed under the rear end will warm the 90w oil while you service the trans.
You also need a suction pump to pull the old gear oil out, the rear diff does not have a drain plug.
A flood light or heat lamp placed under the rear end will warm the 90w oil while you service the trans.
Team Owner
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The Royal Purple 2012 catalog: http://royalpurpleconsumer.com/asset...log_030912.pdf
Last edited by WVZR-1; Jul 21, 2012 at 12:55 PM.
Premium Supporting Vendor
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From: King George VA
AMSOIL Synthetic Synchromesh Transmission Fluid (MTF) (Product Code MTFQT)
More than happy to get AMSOIL products for forum members at dealer wholesale pricing, about 25% below retail, via the AMSOIL Preferred Customer Program. Drop me a PM if interested.
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AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Team Owner
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It sounds like you've made the decision to use the "synthetic" that is most frequently used. I've a good bit of the OE 1052931 still BUT lubricants have changed dramatically in the past 20+ years, maybe it's time to investigate. The HPS 10W30 and a reasonable service interval I believe would have been a good move.
In most later model transmissions, transfer cases, final drives and differentials I do believe it's maybe more important to "pay attention" to lubricants and avoid substitutions!
In most later model transmissions, transfer cases, final drives and differentials I do believe it's maybe more important to "pay attention" to lubricants and avoid substitutions!
Melting Slicks
Joined: Jan 2009
Posts: 3,482
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From: folsom california
its not unusual to find the drain plug somewhat buggered up; if time is of the essence, you might want to have a new one on hand before starting this project; I got a replacement from ZF doc; it wasn't expensive.
