Mercedes People - Oil question

[SmokeEm]

Can anyone give me the definitive answer on the correct oil for my E240 S210 Mercedes?

I am confused - My car was last serviced at a Merc dealer at 101,000 and handwritten on the stamp is a code which I looked up in tinternet to be 5w 40w Fully Synthetic Mobile 1.

Now she is reading 111,000 I thought she had best have a change - I priced up 8L of Mobil 1 at approx £50 and was all set to purchase. Then I got a slow puncture.

Took her to my local ATS for repair and whilst sitting in the waiting room, I figured I would ask how much for them to do it.

The answer was £60 Guv? Eh, I says - I can only just get the oil for that! Mr ATS manager shows me his book and he was right - It says correct oil is 10w 40w Non Synthetic - So I left it

My engine is the 2.4 litre V6 Petrol from a 99 car (Possibly M112 Engine? I'm unsure)

Anyone have the answers or is it down to choice? If so - What would you do..

[optimusprime2]

Well i am running semi synthetic oil in my 1989 M103 engine 260e .Thats because i checked out the Castrol web site and it said it was the oil for my car. You must go to any oil makers site and put your car REG in ,it will show you the oil that they recomend for your car easy.. I would think it would be a semi synthetic for yours as the oils are getting more refined now.

[Battles]

I worry about the websites that recommend oils if they DON'T ask about the mileage. The Benz dealer (or anyone with Autodata) should be able to give you a recommendation based on the mileage the car has on it.

Some engines have better data than others, my M119 engined car has 170k so is now at the limit of the delaer's data sheet but they have M103/M104 data going up to 300k and OM603 data going up to 700k. He said that on the petrol cars, the oil difference as the mileage goes seriously high becomes bigger and more important.

When I bought oil for my SL500 the boy said that what I was after was too light for that mileage unless it was being substantially rebuilt, he consulted their data sheets recommended a heavier oil.
Off the top of my head, I can't remember either the original or recommended grades to show the difference, sorry!

[SmokeEm]

Thanks guys, I am sure someone on here will know what I need for my 112,000 miler

[taurus]

For that engine and mileage I'd use a decent semi-synth 10W 40. Plenty to choose from. It's a matter of choice whether you want non-synth, semi or fully synth.

I did once try running an engine on 10k changes using Mobil 1 fully synthetic from new. It is the only engine I ever had any problems with - noisy and smokey by 70k. So I stick to 5k changes and never had any engine issues. The bodywork falls to bits before the engine fails.

[ChasR]

FWIW I would go with whatever the manufacturer and catalogues recommend.

Regarding the mileage comment I ran all of the Mondeos in a previous post on 5W30. If I am honest the 1.8 seems to run a little better and slightly quieter on fully synthetic Mobil 1 (albeit it is cheap(ish)). It did not run quite as nicely (albeit not badly) on the TripleQX/Vetech stuff. That is now on 300k with me sticking to 10k changes (with the miles I was doing it would have had an oil change every two weeks if I went at 5k!).