Greetings,

Engine: M110.985... (Euro)

Questions:
1)Recommended spark plugs?
(why, etc.)

2)Motor Oil Brand/Type/Viscosity?
(We have ETERNAL summer temps here,
68-95 deg. Fahrenheit)

Thanks




------------------
Hisham
'78 W116 280SE Euro (evenings)
'78 W123 300D (left in LA, for vacations)
'95 BMW 325i (weekends)
'84 Volvo 240GLM (cargo)
'95 Proton Wira 1.6XLi (daily driver)

Use bosch W8DC0 plugs, or Beru equiv.
Oils vary from country to country so stick with a good quality that meets MB specs, & ACEA class A2 or A3 (API class SH/SJ). These engines use a bit of oil so 10w/50 or 20w/50 would be a good viscosity in your climate.

Thanks M.B. Doc.

Another potential ailment for the Doc's diagnoses:-

At cold starts, the motor seems to rumble SLOOOOWLY to life, a sort of stuttering/chugging routine for the first couple of minutes before it gradually smooths out. Once at operating temp.(87C), the engine is sweet sounding and as smooth as any 22-yr veteran could be.

This is an M110 280SE with Bosch K-Jetronic injection. Shouldn't the engine automatically rev-up sufficiently for the first few minutes on cold starts and gradually taper off to about 800rpms at/near operating temps?

Appreciate all feedbacks.

Hisham

A too rich/or lean fuel mixture will cause this ailment. The warm-up regulator is responsible for this mixture control.