Q. Is there an alternative to Marvel Mystery Oil as it is hard to find in this part of the world?
A. Yes, in fact you'll find on Judson's own fitting instructions they don't actually name Marvel Oil as the recommended lubricant. Marvel Oil is an upper cylinder lubricant that has been chlorinated...meaning that the oil has "creep and penetration". If you use a replacement for Marvel you must ensure it has the "creep and penetration" characteristics specific to an upper cylinder lubricant. This is necessary to lubricate the end bearings in the supercharger, the vanes, cylinder walls and valve stems.. You'll find that some single grade 10W motor oil will fit the bill. You can buy them at motorcycle dealers and if you live in the U.K. Morris Oils make a 10W that is said to be identical to Marvel Oil in all but colour, ask for "Morris ring-free XHD 10W". If in doubt stick to Marvel, it's worth paying the extra to protect your Judson and your flat four engine. You'll find Karmann Konnection in the U.K. hold a ready supply, BBT in Belgium and the U.S. virtually everywhere.
http://www.morrislubricants.co.uk/scripts/prodView.asp?idproduct=110Kjøpte noe på Penzoil men jusker ikke hva den heter, tror det var noe til motorsykkel, eller konservering.