In Reply to: oil weight posted by mark '72 golf on September 08, 1999 at 23:57:50:
I've used Castrol 20-50 in my '76 2002 since it was new (since 1976, really!) The bottom end survived to 175,000 miles with the bearing journals just going out of spec. I decided to rebuild the bottom end, when I was doing some head work. The oil was changed every 3000 miles. The crank case had no residue, or sludge when opened. So I highly recommend it, (whatever my recommendation is worth.)
I remember that there are some recommended oil viscosities depending on the outside temperature. I live in Northern California where the temperature is rarely below freezing, so depending on your weather conditions you may not want to use 20-50 where it is cold.
'76 2002 Sahara (bent)
'76 2002 Inka (5 sp OD)