Changed the gearbox oil on the 4.2s/c today. It was last done at 100k by the dealer and it seemed about time now that she has clocked 210k. I removed the filler plug only to be deluged in a litre of black oil. I then removed the drain plug and another 3 litres drained out. I managed to collect a further litre from the sump tray.

I was wondering why there was 1 litre above the filler plug level? 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

When you start the engine the litre above the filler plug circulates round the system, so it isn't excess fluid it's required. You need to make sure when you refill that you have the engine running and top up to the level of the filler plug, refit the plug before switching off or you'll lose another litre

RRBlue - That's a job I'm going to be doing soon, did you drive the car first to get the fluid warm before draining it? 2006MY 4.2 SC
BMW R1250 GSA Rallye TE
Triumph Tiger 1050 (sold)
1979 Pontiac Trans Am (sold)

Yes just to get the oil warm 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

47p2 wrote:

When you start the engine the litre above the filler plug circulates round the system, so it isn't excess fluid it's required. You need to make sure when you refill that you have the engine running and top up to the level of the filler plug, refit the plug before switching off or you'll lose another litre