Trans fluid change ?

[DrJ]

I have 05 Tahoe with 55,000 miles and wonder if complete fluid flush or just filter and fluid change would be best. Not sure which is better. Thanks DrJ.

[Big Buck Buster]

I would just do the flush. Most flush machines have a flow meter(gallons per minute) on them to tell you if the filter needs replacing. I wouldn't replace the filter unless the flow is less than spec.

[jeffreyd]

what does the manual call for compared to your driving habits and conditions? that is what i go by, my vehicles get a filter and fluid at 30k regardless, and i go by the sever driving conditions since we are in the heat.

[Jeremy airjer W]

severe driving = flush and filter every 50k. Common service interval for newer GM cars and trucks

[jeffreyd]

i agree, but with temps over 110 most days for at least 6-7 months out of the year, i dont take chances. mine is a ram 2500 4x4 wife is a magnum. the thing that gets me is the "special" diff lube that has to be changed every 15k. Since out of warranty, that will become amsoil and not touch it again.

[jwhjr]

On my 04 Silverado I did the flush and filter change at 60K. The fluid looked pretty bad by 84K so at that point I pulled the cooler line and flushed it that way adding fluid as it came out about 3 qts at a time. I replaced it with Amsoil and it still looks good so far with a little over 20K on it.

[jeffreyd]

that will be my next thing is to pull the cooler and do a complete flush on the system. We are at 109.2 as of writing this with a whopping 2% humidity level. It is miserable out but suppose to cool off to the low 100's by the end of the week. Then it will get hot. 6/26/1990 it was 122 at the airport, that lasted for 3 days. imagine how fluid acts then lol. hopefully we will not match the record for sometime soon.

[Whoaru99]

I've done just a fluid and filter change at roughly every 50K miles. Truck is now at 203K, give or take, and the tranny works fine. I've been using Amsoil synthetic since after about the first change which I think was at a 1/2 interval...maybe around 20-25K miles.

[spearchucker]

that will be my next thing is to pull the cooler and do a complete flush on the system. We are at 109.2 as of writing this with a whopping 2% humidity level. It is miserable out but suppose to cool off to the low 100's by the end of the week. Then it will get hot. 6/26/1990 it was 122 at the airport, that lasted for 3 days. imagine how fluid acts then lol. hopefully we will not match the record for sometime soon.

But it is a dry heat right?....

[Ebiz]

I have a 2000 Blazer with 145k on it, had a flush and fill done around 70k. Would you guys recommend doing a flush and fill again or have the pan dropped and filter replaced?

[311Hemi]

mine is a ram 2500 4x4 wife is a magnum. the thing that gets me is the "special" diff lube that has to be changed every 15k. Since out of warranty, that will become amsoil and not touch it again.

[Scott K]

Yes.

[theoilman]

Especially with Dodges I recommend using the additive for limited slip differentials - usually a bottle per 2 quarts. (AMSOIL limited slip additive product code ADATB