Dexron VI Factory Equivelent trans fluid

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Originally Posted by rick130

Not a cheap test, IIRC you need liquid and gas chromatography. I've seen the results of a test, it's bloody interesting and it's how oils are reverse engineered.

Quite few years ago I was told that Penrite's Group III bases came from Korea and were exceptionally high quality, equal to Shell's Group III oils, this coming from an independent analyst in the US. Whether they still do I don't know, but I'm using their ATF FS in my 4HP22.

A good GroupIII oil is pretty much equal to a GroupIV oil in oxidation resistance and overall performance, just lagging in low temp fluidity which isn't something we have to worry about in Australia.

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This Rick??

Attachment 141653

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Originally Posted by CU55TM Disco

This Rick??

Attachment 141653

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That's what I'm using ATM.
It was available at a good price and lockup is smooooth.

If you can get Transmax Z at a good price I wouldn't hesitate in using it either.

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Originally Posted by rick130

That's what I'm using ATM.
It was available at a good price and lockup is smooooth.

If you can get Transmax Z at a good price I wouldn't hesitate in using it either.

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Transmax Z was quite a bit dearer than the Penrite I think last time I checked.

What are U doing for filters? Genuine or otherwise???

Engine oil and air filters either Mann or genuine (Mann!) and same for the rotor, the full flow either genuine, Mann or Mahle, and the auto I grabbed a kit from Mario and I think it's Bearmach?
The screen looks fine.

There is a good reason the Transmax Z is expensive,,
it also is applicable for power steer and ACE systems,,
(and when was the last time you priced some Penrite PAS fluid?:Thump:)

and after how long now Rick? is still the gearbox fluid by which all other are judged.[smilebigeye]

Yep, it was an amazing fluid when it came out and I remember being told it also met the GL4 gear oil spec, as do only a couple of other boutique (read exxy) ATF's.

Regarding backwards compatibility of Dex VI, I've read you don't use it in the old fully mechanical/hydraulic AT's, it just doesn't work well but it's ok in anything with a lock up clutch.
The rule of thumb was any US trans post 2000 it was ok.

In a ZF I'd probably stick to the higher visc fluids, or anything on the ZF Approved list.

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Originally Posted by rick130

Engine oil and air filters either Mann or genuine (Mann!) and same for the rotor, the full flow either genuine, Mann or Mahle, and the auto I grabbed a kit from Mario and I think it's Bearmach?
The screen looks fine.

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I got a (shudder) Britpart trans filter kit from the UK - im a bit skeptical whether to use it or not...

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Originally Posted by CU55TM Disco

I got a (shudder) Britpart trans filter kit from the UK - im a bit skeptical whether to use it or not...

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I hear you, I'd be reluctant to use anything out of a blue box too!