What Trans Fluid for My 2006 GTP?????

[ZacG]

Called GM and they told me the trans axel fluid I need is no longer available. It's GM # 21018899 / SAE 75W-80. I called another place to see if they had a certifiable substitute and they said no and that I need to use GL4 synthetic lube. What to use?? HELP PLEASE

This is what I found for a substitute oil from Napa: http://www.napaonline.com/Catalog/Ca...107_0431873668

[theshibbykumquat]

Re: What Trans Fluid for My 2006 GTP?????

Try 88862472, pretty sure it superceeded 21018899

http://www.crateenginedepot.com/Manual-Transmission-Fluid-SAE-75W-85-GL4-88862472-P11005.aspx

[ZacG]

Re: What Trans Fluid for My 2006 GTP?????

That looks like it would work just fine. They said it's a GL4 synthetic oil. My buddy said I could use Syntech 75W-90. I'll like that one you pulled up though. It's right in the middle, thanks!

[theshibbykumquat]

Re: What Trans Fluid for My 2006 GTP?????

Yupp says it replaces the old part number in the description...