My B275 suddenly started blowing spots of oil all over me and itself. It reminded me of the glorious experience of working a Field Marshall. I could sense a job for Christmas coming along. I normally use 15-40 mineral Eurofleet in the engine and change it every 200 hours and it has survived on this without trouble for about seven years. The problem was confined to one cylinder so I looked for an easy fix and obtained some SAE20 Glaze Bust from Millers oils. Having changed to this I ran for four matches, during which time the problem decreased, and finally hitched up to four tons of trailer and went about four miles up and down the mountains of Norfolk. I drained the Glaze Bust, refilled with SAE30 and have just completed a match. The transformation is complete, no oil working up, and I am now consigned to purely domestic chores for Christmas entertainment !