I have a 300E with 161K miles on it, I have had it for 2 years now and since then replaces many parts, OEM specs.
My question is for you guys who changed to zynthetic, I usually change my oil and filter every 2500 miles, I have been using 20-50 castrol GTX. How does the zynthetic oil helps my engine?

I have been told by my father (Rolls mechanic for life) that I won't do any good, and might just end up with licks.



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86' 300E
92' 190E 2.6