[urq] Re:synth v. non-synth oil

[RndLiteBMW at aol.com]

My '83 had been running Castrol 20-50 since new until I bought it, then I started feeding it Mobil 1 15w-50 every 3000/ 6 months.  Since my car sits for long periods between drives sometimes, I believe in the longevity of synthetic, especially on a vehicle that generates as much heat as an UrQ, with a less than efficient non-water cooled turbo. The only problem has been leaks from the front crank seal since the switch.  I replaced the original seal and t-belt at around 60k, and it just started seeping again, 4 years and 10k later, and that may just be because it sits. Good luck!

Tucker Fritch
'83 UrQ
'86 4kcsq
'82 Vanagon
'68 2002