I'm changing the fluid in the gear box. I've read that 75/90 is an OK viscosity to use. How ever before I go out and buy fluid, how many bottles litres will I need to fill it?
The Redline Heavy Shock Proof is ok but to be honest for its price there is much better quality available from both Motul, Silkolene and some of Redlines other gear oils.
Just changed the oil. I filled it until it overflowed from the filler plug half way up the box. This was about 3.5L. Although I drained all the old oil out.
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