Reading Larry's thread got me thinking, are there additives recommended for the diesel engines? A friend swears by adding quarter to half a quart of Chevron automatic transmission fluid with every tank of fuel. Says it helps lubricate the injectors and keeps them clean.

My '87 300D turbo has 285,000 miles and is still running strong. Will I do more harm than good by messing with the fuel?

--Craig

Will I do more harm than good