1991 Chevy Caprice Fluid

1991 CHEVROLET CAPRICE
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CAROLG
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Transmission problem
1991 Chevy Caprice V8 Automatic 98872 miles

I have 2 questions ,one is what is the best transmission fluid to use ? The second is what are the best spark plugs to use and the correct setting on the guage?
Apr 9, 2009 at 8:26 PM
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SERVICE WRITER
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DextronIII..any brand.

Spark plugs-Autolite or a/c Delco.

What's the 8th digit of the vin?

Then I can giove the part # and gap.
Apr 9, 2009 at 8:56 PM
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CAROLG
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I think I've got the hang of this now, the eight digit from left to right is "E", but from right to left it would be "M".

I will make a contribution when I get paid and will book mark this site to make sure that I do.

Thanks
Apr 9, 2009 at 10:46 PM
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SERVICE WRITER
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E is the one. You have a 5.0 (307) engine....non-police package....If you need to know.

The Auto lite spark plug number is "26". This is a standard resistor plug that I would change every 30-35,000 miles. The gap that needs to be set is .035".

Use some anti-seize on the threads but away from the electrode. Use silicone dielectric grease on the plug wire ends before you reattach them.
Apr 10, 2009 at 6:09 AM