[Plumpcars]

Something I don't understand. Critics of 20/50 say it's 'too thick' but it's a multigrade? It was invented so as not to be 'too thick' ? Not aimed at you Al and I've always used it. I use Penrite HPR30 despite some abuse from others, great oil.

 

[Plumpcars]

Personally I don't see the point in using a cheap oil for running in, I use the same product as I use normally. If you spend thousands on a new engine why cut corners on a few gallons of oil and a few filters when you get it running. I spent all of my working life dealing with high end cars and we always broke in with the same oil as normal even when our engine developments went over to Mobil 1 in the early eighties.

 

[Plumpcars]

Zinc is your friend.