My Uncle, who was a professional mechanic until he retired in 1985, drove a 1965 VW Beetle from new until he sold it in 1984.
It ran like a top and thanks to rustproofing had no rust at all. He sold to a VW collector.
As I recall, he ran either a 20W-20 diesel oil or a 10W diesel oil in the coldest part of winter, with an electric oil pan heater.
In summer, he ran either a 40 diesel oil, or a 20W-50. He claimed the air cooled motor needed a heavier viscosity. It ran quite strong even with 275,000 miles on it.
Maybe Mobil 1 15W-50 summer and Mobil 1 10W-30 winter? There must be VW Beetle forums out there to help with this.
Jerry
It ran like a top and thanks to rustproofing had no rust at all. He sold to a VW collector.
As I recall, he ran either a 20W-20 diesel oil or a 10W diesel oil in the coldest part of winter, with an electric oil pan heater.
In summer, he ran either a 40 diesel oil, or a 20W-50. He claimed the air cooled motor needed a heavier viscosity. It ran quite strong even with 275,000 miles on it.
Maybe Mobil 1 15W-50 summer and Mobil 1 10W-30 winter? There must be VW Beetle forums out there to help with this.
Jerry