Thread: Disco 3/4 Automatic Transmission FAQ - 6 Speed

Thought it worth while to post this up here as some of you may be interested. With 24,000km on my rebuilt trans I took an oil sample for analysis. As a result Ive now installed a magnafine inline filter on the cooler return line as the particle count (ISO cleanliness rating) was way to high for my liking. I'll resample the oil after probably 5,000km and see if theres been any improvment to the particle count and post up the results

Originally Posted by shanegtr

Thought it worth while to post this up here as some of you may be interested. With 24,000km on my rebuilt trans I took an oil sample for analysis. As a result Ive now installed a magnafine inline filter on the cooler return line as the particle count (ISO cleanliness rating) was way to high for my liking. I'll resample the oil after probably 5,000km and see if theres been any improvment to the particle count and post up the results

Would you please share what the filter is, make, mode etc and where you got it from. A photo or two would be handy as well if you can.

Originally Posted by shanegtr

Thought it worth while to post this up here as some of you may be interested. With 24,000km on my rebuilt trans I took an oil sample for analysis. As a result Ive now installed a magnafine inline filter on the cooler return line as the particle count (ISO cleanliness rating) was way to high for my liking. I'll resample the oil after probably 5,000km and see if theres been any improvment to the particle count and post up the results

Shane, what composition were the particulates?

If non-ferrous (eg, bearing or clutch material) then the Magnafine will be less useful, as only the filtration media in it is hopefully capturing some material..

In which case - a conventional filter may be cheaper and more effective.

Originally Posted by mr_squiggle

Would you please share what the filter is, make, mode etc and where you got it from. A photo or two would be handy as well if you can.

Filter is a magnafine 1/2", can be purchased from western filters:
Magnefine 12mm (1/2") Magnetic Inline Transmission Power Steering Filter - www.westernfilters.net

Originally Posted by Tombie

Shane, what composition were the particulates?

If non-ferrous (eg, bearing or clutch material) then the Magnafine will be less useful, as only the filtration media in it is hopefully capturing some material..

In which case - a conventional filter may be cheaper and more effective.

Main contaimants are iron and copper - close to 50:50 at 35 and 37 ppm. Dosent sound like much but when the trans failed it was 109 and 116ppm. I mainly went for the magnafine for the ease of installation at this time. Your right a conventional filter will likely be much cheaper and a larger spin on filter will be more effective and last longer. I just need the spare time to figure out where Im going to mount it as I think that will be the way I'll go in the future.

Originally Posted by shanegtr

Thought it worth while to post this up here as some of you may be interested. With 24,000km on my rebuilt trans I took an oil sample for analysis. As a result Ive now installed a magnafine inline filter on the cooler return line as the particle count (ISO cleanliness rating) was way to high for my liking. I'll resample the oil after probably 5,000km and see if theres been any improvment to the particle count and post up the results

Sounds like an interesting mod for the post 08 6HP26.

Im interested to see what the filter looks like when you next change the oil. How long until the fine paper filter blocks enough oil to start starving the trans?

Originally Posted by Disco-tastic

Im interested to see what the filter looks like when you next change the oil. How long until the fine paper filter blocks enough oil to start starving the trans?

Theres a bypass in the filter in the event that it blocks