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Transmission fluid change

Tiny
KAYJAY
  • MEMBER
  • GMC C3500
I have a 1996 V6 S-10, I want to change the fluid in the manual transmission. Problem is no one will give me a straight up answer on the fluid type or number. My haynes book says that I have a New Venture 3500 transmission and gives me a photo of it. The drain and fill plugs don't look the same in the photo and on my truck. I have about 1" hex plugs on mine, one at the very bottom and one about 3"or 4" above it, do these resemble a NV3500? I can't find any #'s on the transmission, but they might be hidden. So, is my transmission a NV 3500 or is the picture wrong? And, what do I put in it? Any suggestions would be great, thanks.
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Tuesday, May 2nd, 2006 AT 10:53 AM

1 Reply

Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
Use a good grade of 15W-90. IF THE OIL is thin like motor oil when you drain it then it is a Mazda tranny and requires 30W motor oil.

If it smells bad like an old dirty sock use the 15W-90 oil.

That is old mechanic wisdom! Losone
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Tuesday, May 2nd, 2006 AT 11:32 AM

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