Mercedes 1986 300E 165,000 miles
I have a 1986 300E 137K miles. According to the MB manual, I can use regular gas instead premium by retarding the timing. Has anyone tried this? If so, any pros and cons?
If your car is set up to run regular grade fuel by retarding the timing a bit, the drawback would be reduced power. Just a fact of life (or physics): higher octane fuel allows greater spark advance which results in more power.
Timing knob? what? Which models have that? Only TE's?You should off course try a tank of each fuel and calculate whitch gives you the best fuel economy, with MPG vs. fuel cost..
My 300TE has got a timing selector knob in the engine bay , for "premium" and "super" fuel..
Off course i don't know what to select as my wife put "regular" in the tank and i put "super" in it :S