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Gear oil visc 200

posted by  Cliff Pope on  Sun Oct 24 20:39 CST 2004
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last visit: Thu Feb 3 05:28 CST 2011
[RELATED]

If it is working well I'd stick to ATF. When you change it, take the sump pan off and clean the filters.
If it is beginning to slip, then you could think about alternatives as an alternative to an overhaul.
Mine started to slip some time ago, diagnosed as the pressure valve oil rings leaking - a common failing with age. As a stop gap I put in semi-synthetic gear oil, despite warnings that this might not be a good thing, and it miraculously cured the problem The overdrive has been snappier and more positive than it ever was. That was 50,000 miles ago. It is now on 305,000 miles.

I have another car (Triumph 2000) that has the same J-type Laycock overdrive, and the specified oil is a 80/90W gear oil.






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