12-01-2020, 12:48 AM
For what little it is worth, I have been using a good quality 10W/40 semi-synthetic oil in the engine and gearbox and a 'straight' SAE140 gear oil in the back axle. I have set a servicing schedule where I change the engine oil every 2,500 miles and the gearbox and axle oils every 5000 miles. 7000 miles covered in 15 months with no problems so far (Fingers crossed!)
I use a good quality 20W/50 in the Series 3 Landrover and the Mk2 Polo, but it is a bit 'treacly' when cold; fine for full pressure systems, but I worry about trying to force it through those little 1/16 inch jets that feed the bottom end of a cooking Seven engine on initial start and warm up.
I use a good quality 20W/50 in the Series 3 Landrover and the Mk2 Polo, but it is a bit 'treacly' when cold; fine for full pressure systems, but I worry about trying to force it through those little 1/16 inch jets that feed the bottom end of a cooking Seven engine on initial start and warm up.