2005 Forester with an automatic. First time brought to a dealer and their oil change/inspection said everything was great but transmission fluid was slightly low. They topped off. Recommended that the aftermarket transmission filter be replaced with the OEM filter the next time I choose to flush fluid. The master tech said the fluid was clean and had life left he just highly recommends genuine oil and transmission filters due to the way they're made. Oil I know has to do with bypass pressure, but what's up with transmission filters for Subarus? They're special, too? Tech said it has to do with flow.
Subaru Transmission Filter
- Thread starter HowAboutThis
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Yes, it's not "special" per se, but instead of a bypass valve like you are used to on an oil filter, there is a metal mesh bypass where the poppet bypass would be. This is to ensure a plugged filter "shouldn't" fry the transmission, but realistically if you need the way the OEM trans filter is constructed, your transmission likely doesn't have long to live anyways.
It is considered a "lifetime" filter, and in 99% of applications it is. Buy a Napa 1334 filter. It's built the same way as the OEM.
It is considered a "lifetime" filter, and in 99% of applications it is. Buy a Napa 1334 filter. It's built the same way as the OEM.
Originally Posted by SubieRubyRoo
Yes, it's not "special" per se, but instead of a bypass valve like you are used to on an oil filter, there is a metal mesh bypass where the poppet bypass would be. This is to ensure a plugged filter "shouldn't" fry the transmission, but realistically if you need the way the OEM trans filter is constructed, your transmission likely doesn't have long to live anyways.
It is considered a "lifetime" filter, and in 99% of applications it is. Buy a Napa 1334 filter. It's built the same way as the OEM.
When I use NAPA's site, it lists a different filter for the trans. Is the 1334 a filter that the online gods don't let me know about?
Yes, it's not "special" per se, but instead of a bypass valve like you are used to on an oil filter, there is a metal mesh bypass where the poppet bypass would be. This is to ensure a plugged filter "shouldn't" fry the transmission, but realistically if you need the way the OEM trans filter is constructed, your transmission likely doesn't have long to live anyways.
It is considered a "lifetime" filter, and in 99% of applications it is. Buy a Napa 1334 filter. It's built the same way as the OEM.
When I use NAPA's site, it lists a different filter for the trans. Is the 1334 a filter that the online gods don't let me know about?
The Subaru transmission oil is nothing special. The Subaru transmission filter is just a screen. The aftermarket transmission filter is sometimes just a regular oil filter, which you really don't want due to flow issues.
And you state this is nothing more than a screen because? Ed
Having that hole going into a screen, the filter is perpetually in bypass, except for the screen beyond the hole. That pretty much makes it nothing more than a screen, since contaminants are free to forget the filter media and just go through the screen.
The external filter is a Wix 51365 and we don't change in internal as it is just a screen type. The newer transmissions the external filter went away i guess to save a few dollars. If you leave spin on filter off for a long time and let it drip and put a drain tube through the drain hole in pan to siphon oil below pan threads it will drain a lot of fluid out of system. We use Havoline synthetic multi vehicle fluid which is a step up over oe requirements.
Originally Posted by BlakeB
https://www.subaruoutback.org/forum...ubaru-transmission-filter-different.html
Makes sense now ;-)
https://www.subaruoutback.org/forum...ubaru-transmission-filter-different.html
Makes sense now ;-)
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