Hi

That amout of oil loss has to be going somewhere obviously. Check each plug for oil fouling indicating that you are burning it. If you accelerate and the remove your foot off the pedal and then put it back down if you see a puff of blue smoke then it is burning. Check the inside of the cam cover for sooty oily deposits and with the engine running and the cap off check for blue smoke emitting from the filler cap opening.

If all seems well, the plugs are clean and definitly no smoke then remove the lower sump guard and check for obvious leaks from the oil filter seal and the sump plug. The sump plugs have a fibre/resin oil seal, blue in colour and this sticks to the sump and has to be removed and replaced with a new of the same or a copper seal. It is often over looked as it is not that obvious. I always use a copper replacement which comes off with the plug and is reusable. Some of the oil filters come with a new seal in the box but most dont. If the old one is left on and the plug replaced it will 90% of the time leak. Under pressure oil comes out rapidly as a fine mist and usually deposits itself over the bottom of the car, however, because of the sump guards it is not alway immediatly obvious and can drip and collect in the guard and then dissappear in low drip drip and not catch on the car as you travel along.

Cam covers can also crack on their corners and allow oil to run down the side of the engine and again onto the lower sump cover. Again this will be obvious once the guard is removed.

OLDMINIMAN