Wolfy
Veteran Member
Any members try this? Right now, I have to keep on hand: 5W40, 15W40, 10W30, 30W, and 5W30, in both regular and synthetic. A, It is getting tiresome stocking and tracking all of these weights. And B, the 5W40 would allow the engines to start bettter in the winters around me that seem to get colder every year. Upon research, I am convinced 5W40 would be great in my vintage air cooled engines. The only road block for me, from entirely switching, is my 2006 Ford F350 that I run 5W30 synthetic in. But if that could use it, I think I would change over everything. Shell Rotella, Mobil One, and Delo 5W40 synthetic are all stocked in most stores around me, so availability is not an issue.