Bit of a strange question. Had a rebuild V8 3.5 fitted in my RR. Rebuild engine is military engine marked 'ECO 2 1-96'. When filling it up withfresh oil, I noticed I had to fill 1 litre more than mentioned in the RR manual. I've driven 1000 km's so far, and used almost 1 litre of oil (10W40). Also I've some leakage between gear box and engine. So I took the dipstick from the old engine (which is a different design,much shorter) , and measured the min-max mark with the dipstick from the new engine ,calculating the difference in length. The min mark of the new dipstick is on the max mark of the old dipstick. As far as I can see, there's no difference in oil sumps, so maybe it was ment to mount in an angle in some sort of military vehicle? I suspect I' overfilling it. Also the oil filler is completely different, mounted on the other valve cover. I've no idea about compression ratio or power output ,it's not mentioned at the engine number.The engine is sprayed in light-green colour. Anyone any idea?