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Emailed Redline and this isthe answer i got
Hi Mark,
Thanks for the interest in our products- nice to see them in a “proper” car… I’ve had 3 Porsche 944’s and loved em all.
The product you need for your gearbox is Red Line MT90… This is a GL-4 rated oil specifically designed for transmissions and transaxles.
It will flow well when cold, and offer a constant viscosity as temperature changes.
This means it will always have the correct co-efficient of friction for your synchros and is non- corrosive
In summary it will…
Eliminate notchy shifting
Allow high-speed downshifting
Give excellent shifting even when cold
Eliminate gear whine & rattle at high temperatures.
Loads of dealers listed on the website depending on where you are based but a few suggestions are---
1.) Demon Tweeks… All our products in all catalogues and in showroom
2.) Porscheshop… Carry a small stock of our gear oils at all times
3.) Opie oils… offer a discount scheme to members of almost every UK car club
Any problems or questions just call me direct on the number below.
Kind regards,
Lee Rushton
So even though people recomend different makes /type etc ,i think i will stick to MT90
Mark
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