Intriguing attitude. The difference in recovery value between a running car and non-running car is greater than the cost of installing a new timing chain... unless you have a really creative tax advisor.

I don't think synthetics from now on will make your timing chain and guide rails last much longer than whatever you're currently using for oil. And I'm not sure I want to know

Sixto
95 S420
91 300SE
87 300SDL
83 300SD