Good service for my Disco 300TDI

Gave the Disco 300TDI a service today. This is the first service since rebuilding the engine and by the thick and lumpy oil coming out I should have done it earlier. Decided to use just cheapo 15/40W engine oil (value branded) and see how it goes. Sump plug was a little tight, but other than that everything went ok. Because I run on old veggie oil I change the fuel filter at every service (and even in between services) and it was a good job too - quite a few bits in there caused by my less that perfect filtering techniques on the waste veggie oil plus I ran out a few weeks back pulling loadsa crud down the line and into the filter. Finished off with a good spray round of light oil to arrest some of the rust and a cetane booster in the fuel tank for a bit more go. Seemed much quieter on the journey home from the field. Next items are the gearbox/transfer box oil levels, FTC2203 in the gearbox yolk and all round greasing.