When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Good point Qudcammer re the M1 Vtwin 20W50, excellent choice for air cooled engines which run much hotter especially in the summer months. I am going to give it a shot this summer.
As someone with over 10 years in the lubricants business in North America I always get a good laugh from the "my oil beats your oil arguments" and some of the rationale used as to why. The one thing i can confirm without an ounce of hesitation is that most here only use about 33% of a synthetic oils true potential with respect to drain intervals.
I guess the expert has spoken. I review thousands of UOA and VOA samples a year in my profession. How many do you send off annually to review 2 maybe 3? My argument is based on global brands who all have the Porsche approval and have met the benchmark guidelines set by the OEM. Sure bathtub blenders and rerefiners are in another class altogether that frankly arent even worth mentioning here.
I gave my opinion re the OP question above based on the set of criteria he provided.
The one thing i can confirm without an ounce of hesitation is that most here only use about 33% of a synthetic oils true potential with respect to drain intervals.
How true. Europe went to 20K kilometer drain intervals ages ago where everyday daily drivers run at 200 k/h.
One of my co-workers performs drain intervals at 25K kilometers (15.5K miles) and then has the oil tested in our labs where guess what....drum roll...its still good. And his car has big miles at this point being a 2000.