I have a 07 Silverado with a 6.0 and a 4l70 trans. The truck runs about 10k miles a year with heavy city driving with moderate loads and no towing. At 5k miles I installed a Perm-a-cool in line filter and have a Wix 51515 filter. The filters are only about $4 from Fleet Filter so I will be changing them at my 6 month OCI. I also plan on fluid changes every other year with the trans cooler line method. I have read a lot of posts saying the factory trans filter is not very efficient. So, do you think I will ever have to drop the pan and change the factory filter ? The transmissions in full size GM trucks seem to be a (carp) shoot. Some guys are changing trans every 50k and some run for ever.
Trans filter question
- Thread starter LAGA
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I would change the pan filter at the first transmission service, and then every 3-4 services, change it again.
JTK
$100 Site Donor 2025
I like to drop the pan at least once to clean the gunk off the pan bottom and magnet. There will always be some debris laying there, but the first drop is usually the worst. I have yet to see a dirty OEM filter. If it looked clean, I'd leave it and stick with the in-line replacements.
Joel
Joel
Thanks. I will be staying with the Dex-VI. I guess I will drop the pan and clean it out between 20k and 30k. That will give me a chance to install a drain plug too. In the other trucks that I have dropped the pans on I never saw any visable dirt or debris either. That is why I asked if it was even necessary with the inline filter.
Our trans rebuilder insists that we use an inline filter to keep the warranty.
Factory cars don't use them, however.
Unless your transmission has a problem, the main fluid problem will be from heat and deterioration, not particulate matter.
Factory cars don't use them, however.
Unless your transmission has a problem, the main fluid problem will be from heat and deterioration, not particulate matter.
Changing the Perma-Cool filter every 10,000 miles is way overkill. I change mine every time I change the fluid. Every 30,000 miles.
With a permacool installed very early in the units life, I would never bother with changing the 'pan' filter. But, since OCD is the rule here, dropping the pan at 100k for a replacement and inspection would be good to do.
Installing a drainplug ASAP would be much easier then pulling a cooler line for ATF replacement every 2 years.
The permacool filter would be MORE effective with a couple magnets on it. Feel free to install a filtermag or some old harddrive or ebay neo magnets. You can also change that 51515 filter every year or 2, since mileage driven is low.
Installing a drainplug ASAP would be much easier then pulling a cooler line for ATF replacement every 2 years.
The permacool filter would be MORE effective with a couple magnets on it. Feel free to install a filtermag or some old harddrive or ebay neo magnets. You can also change that 51515 filter every year or 2, since mileage driven is low.
Originally Posted By: JTK
II have yet to see a dirty OEM filter.
II have yet to see a dirty OEM filter.
Guys, I have been getting the inline filters, and other trans goodies at bulkpart.com.
I don't work for them, or get anything for saying that I like them, but I've ordered everything from hard parts to trans coolers from them, and they run a great business.
I don't work for them, or get anything for saying that I like them, but I've ordered everything from hard parts to trans coolers from them, and they run a great business.
JTK
$100 Site Donor 2025
Wow! Nice one benjamming. Was that removed from a working/healthy transmission?
Joel
Joel
Yikes!
Quote:
The transmissions in full size GM trucks seem to be a (carp) shoot. Some guys are changing trans every 50k and some run for ever.
The service life of the trans is directly related to whomever is driving the vehicle IMO. Seen it at work, in 30 yrs the same guys always had trans problems with their trucks. Be it Chevy, Ford or Dodge, you could bank on certain guys blowing the trans.
Been driving since 1964 and never once had a GM trans fail.
Back in 1993 I installed Amsoil ATF in my mothers new 93 Lumina. In 2005 she stopped driving and I now use the car for a winter car. Last year I had the filter changed (1st time) and the bottom of the pan was clean, like new. No sediment at all. I never replaced the filter back in 93 because the car had less than 5,000 miles at the time. These car had a reputation for bads trans but this one is still going at nearly 100,000 miles, 75,000 being driven by a little old lady.
The transmissions in full size GM trucks seem to be a (carp) shoot. Some guys are changing trans every 50k and some run for ever.
The service life of the trans is directly related to whomever is driving the vehicle IMO. Seen it at work, in 30 yrs the same guys always had trans problems with their trucks. Be it Chevy, Ford or Dodge, you could bank on certain guys blowing the trans.
Been driving since 1964 and never once had a GM trans fail.
Back in 1993 I installed Amsoil ATF in my mothers new 93 Lumina. In 2005 she stopped driving and I now use the car for a winter car. Last year I had the filter changed (1st time) and the bottom of the pan was clean, like new. No sediment at all. I never replaced the filter back in 93 because the car had less than 5,000 miles at the time. These car had a reputation for bads trans but this one is still going at nearly 100,000 miles, 75,000 being driven by a little old lady.
Originally Posted By: Whitewolf
Doesn't look very good to me. What's that curved piece at the top, is it metal?
Nope. It's white and breaks fairly easily.
Doesn't look very good to me. What's that curved piece at the top, is it metal?
Nope. It's white and breaks fairly easily.
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