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yes, it needs to be pumped out, no it ain't hard! It will take longer to get the car up on jack stands... I ain't kidding.
go to pepboys and buy a Mighty-mite pump. It's about $10~$15, depending, and works like a champ.
Gordon Killebrew recommends using TWO bottles of GM Posi additive.
I am using that, plus enough Valvoline gear oil to bring it up to level.
As a side note, I am most impressed with the Valvoline line of synthetic products... brake fluid, power steering, gear oil, and most recently, engine oil.
What kind of gear oil exactly do you use? I know you use Valvoline, but I though there was different types of gear oil?
According to the service manual, the transaxle fluid does not require changing. SAE 80W or SAE 80W-90 GL-5.
When and if you change it is kind of up to you. Stick a finger in it and look and smell. If it still looks new and doesn't smell bad, it's probably OK..
Most of us will never change the diff. lube. We should probably change it every 50000 miles. Run the test--- put your finger in and look at the lube. If it is dark brown or black with over 50000 miles, change it. I use Valvoline synthetic gear lube.
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by lefoy84
the transaxle fluid does not require changing.
The C4 does not have a transaxle.
They have transmissions (gearboxes) and they have rear ends (differentials). Both require periodic lubricant changes.
There was a recent thread on trans lubricants and the testing mentioned in that thread indicates that the lubricant breaks down fairly quickly and should be changed about every 30k miles, as someone has already mentioned.
Changing the rear end lube is more difficult than the trans (no drain plug), but it's not bad...just get a suction pump from NAPA and be ready for some isometrics.
A friend of mine who used to sell used Vettes used a turkey baster to remove the old fluid. He added a hose to the end and just made sure he squeezed before he put the hose in the fluid. Nice and cheap and worked for him.
A friend of mine who used to sell used Vettes used a turkey baster to remove the old fluid. He added a hose to the end and just made sure he squeezed before he put the hose in the fluid. Nice and cheap and worked for him.
I think a turkey baster would not have enough suction, Use a suction pump, I bought one from Harbor Frieght for about $6 and some extra hose from home depo.