Hello everyone,

I'm Tim from Germany and have owned an E430 station wagon for a good year now.
I changed the oil yesterday and since then my oil level has been rising, especially when I'm driving at full throttle (e.g. on the highway). I can't explain it, but I've already had to drain the oil 3 times because the on-board computer reported that the oil level was too high and the dipstick also showed that the oil level was too high. Has anyone ever had a problem like this?
Strangely enough, before the oil change I had more of an oil consumption or loss, then the car stood for 2 months and now it was only moved a short distance to my garage for an oil change and then just a bit of highway and since then the phenomenon occurs.
I can't really judge whether the oil smells of fuel. Is there any other way to detect fuel in the oil than by smell?

Then I have a completely different question. I've been toying with the idea of fitting a naturally aspirated M113 55 engine for some time. I've read a lot about it, but not everything was quite clear to me.
My E430 is one of the earliest models (1997), so it has the ME2.0.
My plan was just to convert the engine and keep my old gearbox for the time being so that I wouldn't have any stress. The gearbox should be able to withstand the engine torque, right?
I would then have the ME2.0 reprogrammed to cope with the other engine size. Is that theoretically possible?
Then another question, are there any differences in the M113 55 engines from the different models (E-class, S-class,...)? I have an offer for an engine from an ML55. Do I have to make sure that the engine also comes from an earlier model or have the engines not changed over the years?

I'm looking forward to your answers.

Best regards from Germany, Tim