We have a very low miles '90 VW Cabriolet just under 37K original miles on the original 1.8L motor.
As far as I know, based on records obtained with the car, it's always had conventional oil. When we got it last summer, I changed it with Castrol GTX 20W-50 per the Viscosity Requirement vs Ambient Temperature table in the Bently Manual for the MK1 platform.
I'm wondering a few things:
1. How often should I be changing the oil in this car? It gets driven ~1000 miles a year in spirts. It will sit 2-4 weeks without being started then get driven 30-100 miles on a weekend day cruising around.
2. Can/Should I switch to full Syth like 0w-40 M1 that I run in my other VWs?
3. Are there risks to switching?
Thanks!
As far as I know, based on records obtained with the car, it's always had conventional oil. When we got it last summer, I changed it with Castrol GTX 20W-50 per the Viscosity Requirement vs Ambient Temperature table in the Bently Manual for the MK1 platform.
I'm wondering a few things:
1. How often should I be changing the oil in this car? It gets driven ~1000 miles a year in spirts. It will sit 2-4 weeks without being started then get driven 30-100 miles on a weekend day cruising around.
2. Can/Should I switch to full Syth like 0w-40 M1 that I run in my other VWs?
3. Are there risks to switching?
Thanks!