What oil to use

[Ace]

Hey....I have a 95 c220 does anyone know if it is ok to switch to synthetic oil, the dealer and manual said to use conventional oil.
Are there any potential problems that could happen? Thanks.
If ok, What are some good synthetic oils to look for and what wieght?

[Paul]

I went to a MB dealership the other day and they told me they use mobil1 in all there new MB which is 5-50,so i run mobil1.
then i spoke to a head mechanic for MB and he said 10-40.
the engine hasnt blown any smoke and i thrash the kompressor.
sory not much help.

[Ace]

Thanks.....my car is 95 and was wondering if there were any advantages to using synthetic oil in the older endine or if there would be any problems in switching. I have searched about this previously but all the info is about cars 98+.

[Renn 208]

Just as another perspective, Porsche reccomends Mobile 1 synthetic for all their cars, from classic to modern.

[GDawgC220]

Originally posted by Renn 208
Just as another perspective, Porsche reccomends Mobile 1 synthetic for all their cars, from classic to modern.

I've been advised against synthetic for older engines due to the fact that synthetic is thinner than conventional oils, which are thicker. The thin syn formula could seep/leak through finer cracks than the conventional oils.

I've got 142k on my w202, so I just keep using my 10-w40 at every change...good all year round oil for New England conditions. I dunno if I want new leaks...My .02 :)

[Paul]

Originally posted by GDawgC220
I've been advised against synthetic for older engines due to the fact that synthetic is thinner than conventional oils, which are thicker. The thin syn formula could seep/leak through finer cracks than the conventional oils.

I've got 142k on my w202, so I just keep using my 10-w40 at every change...good all year round oil for New England conditions. I dunno if I want new leaks...My .02 :)

I agree:)

[marksbenz]

I use Mobil 1 15w 50 on my 95 C220 with 112k. No problem at all. Your engine will run cleaner. Make sure you use oem oil filter.

[GDawgC220]

i have my oil changes at a MB independent dealer...all OEM stuff.

My engine runs fine on the 10-w40 or 10-w30 and even at 5k intervals, the oil is still very clean. I thought about using syn, but just on the safe side to keep new leaks from showing up :)

[Renn 208]

Originally posted by GDawgC220
I've been advised against synthetic for older engines due to the fact that synthetic is thinner than conventional oils, which are thicker. The thin syn formula could seep/leak through finer cracks than the conventional oils.

I've got 142k on my w202, so I just keep using my 10-w40 at every change...good all year round oil for New England conditions. I dunno if I want new leaks...My .02 :)


Here's an excerpt from an MBCA article:

(Ed Reyes, Senior Staff Engineer MBUSA)


There is no question that the current generation of synthetic would improve engine performance in older vehicles. There was an old myth that synthetics would not benefit older cars that had been using conventional mineral oils for several years. I think that came about because the first generation of synthetic motor oils, in the early 1970's, an additive that was being used cthen caused rubber seals to swell and the oil to leak out. Now the new synthetic formulas do not have that problem....

[crsh2]

Originally posted by GDawgC220
I've been advised against synthetic for older engines due to the fact that synthetic is thinner than conventional oils, which are thicker. The thin syn formula could seep/leak through finer cracks than the conventional oils.

I've got 142k on my w202, so I just keep using my 10-w40 at every change...good all year round oil for New England conditions. I dunno if I want new leaks...My .02 :)

I've Search the forum but there was really no post on what oil to use.
I originally was going to use Castrol 10-w40 but ended up using 20-w50 Semi-syntec.
I drove the car purposely to get the feeling after the oil change.
I definately know that Engine Runs a little rougher than when i bought it. :(
I wish i did not do the oil change at all.
Next Time im doing castrol 10-w40 Regular Forget Synthetic!:mad:

ACE Don't Use Synthetic.

[GDawgC220]

older engines may benefit from synthetic versus conventional DINO oil, such as Castrol (great DINO oil BTW), I guess you could try a change or two with synthetic and see how your car runs, but IMO, for myself, I'd rather stick with what works for my car as it has for 10 years now.

What if I do go synthetic and find that it leaks oil in places where my previous oil did not? If I switch back, will that leak from the syn be there with the DINO oil?

[Renn 208]

semi-synthetic (synthetic blends) and full synthetics are not the same. Also, remember to use the recommended weight for your car. I'm not here to convince you to use synthetics if you don't want to. I simply provide the information I have, but the ultimate choice is in your hands.

[speedybenz]

Mobil 1, 5w-30wt. synthetic. Th other oil is a waste of your engine.

There are some better synthetic oils out there, but not by much and they do cost more. One you can try to find is GERMAN CASTROL SYNTEC. It says"product of Germany" on the container. It is a 0-30 wt and MB approved.

Jeff