I now have a 91 and a 92 300D. Both have the 602.962 engine. Why do they, according to the manuals, have differing engine oil refill capacities? For the 91, it says 7.9 quarts; for the 92, it says 7.4 quarts. Both are with filter change.

Just curious.

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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

there was a TSB on the subject. The lower number is an updated quantity.

search for a technical service bulletin by MB, you should find it within a short time.

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Probably the oil level was a bit too high in practical usage and was hitting the spinning rods a bit too much.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

But are the marks on the dip sticks correct or the same?

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Ron Schroeder
'85 300 Turbo Diesel 2 tank WVO
'83 300 Turbo Diesel 2 tank WVO
Some former WVO vehicles since ~1980:
'83 Mercedes 240D
'80 Audi 4000D
'83 ISUZU Pup
'70 SAAB 99 with Kubota diesel
'76 Honda Civic with Kubota diesel
'86 Golf
Several diesel generators
All with 2 tank WVO conversion
LI NY

Sounds like the earlier cars as mentioned above it will be a half quart off, so you would need to run it in the middle between the high and low marks.

I know that the 603 engines are very sensitive to oil levels. When I had my 350sdl once I overfilled it a half quart or so. On a 617 this would not be an issue.

On the 603 with it at that level I found that on a trip if I drove my normal speed the engine temp started going up but if I slowed down it stabilized. When I got home I drained out a bit to get the level down where it belonged.

I figured they reduced the clearance between pan oil level and the crank to squeeze the hood line down as much as possible in the 60_ series engines.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.