Well I haven’t heard of that problem before but like has been said, regular oil changes. It wouldn’t be a problem anyway as I have at least 3 spare heads lol.
My B1 has one over 40,000 miles and still starts on the button and purrs like a kitten. One of our members (chrisLWG) bought his B1 new in 1976. He has now gone round the clock on his twin. Yes that’s over 100,000 miles.
Need I say more?