Draining the Engine Oil Sump, changing Oil Filter, cleaning the Flame Trap

Quick facts :

• every 6.000 miles, warm engine (Hb p63)
• always change oil along with oil filter

Gathering infos on the subject here ...

Nice explanation of engine lubrication here

Condensation in engine
Six months is more than long enough to keep the oil, 3 months is better. Miles do not mean all that much on a car that gets little or short driving. Condensation collects in an engine and short infrequent trips will not heat the engine enough to get the water out.

Always change filter
I would NEVER recommend changing only the oil and not the filter. If for no other reason you are leaving maybe a quart of dirty old oil in the filter that contaminates your fresh oil.

The Sump Plug Adaptor is often missing in the tool kit. Here is what I found in RR Forum : "Quote: 13mm would be the closest size you'll find in metric. A 14-mm Allen wrench is a tiny bit too large and 13 mm just a tiny bit too small. Some have purchased a 14-mm and then ground it down a smidgen.
You might want to consider buying a Quick Oil Drain Valve so you'll never have to take the plug out again. The FG-5 or FG-5N sizes (The 'N' version has a nipple on the end of the valve) are the ones for Rolls-Royce and Bentley motorcars from the Cloud/S period up through the SZ series cars.