Hi Fatboy,
I use Redline but never seen a 5L bottle, I go to Bursons and purchased a container of ALL SYNTHETIC REDLINE HEAVY SHOCKPROOF GEAR OIL, It is expensive but your gearbox will become silky smooth as butter and less noise (almost noiseless) for a US 1 Gallon container it is valued at $142.00 Australian but I managed to buy it for $120.00 that is enough oil for 4 changes 3.785 ltrs Yep that's a USA Gallon, Where do you get the 5L Bottle from?????????????????? What weight ATF do you use