1994 S420 in Georgia if it matters, 100k miles

What type of engine oil should I use (I've gotten the whole gammut of reccomendations, 15w30, 15w40, etc.) so what is the best?

Also, for antifreeze: do I neeed to replace/top up the anti freeze with MB original stuff or will any old antifreeze do?

Thanks in advance for your help

Call you local MB dealer. I use 20w50. It depends how old the coolant is. If it is over two years, change it.

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89 300 CE

Yeah, that's where i got the reccomendations from

all 5 dealerships i called gave me a different engine oil to use

Do a search this topic has been discussed to death, but any oil that is 40wt or higher will work. Ie no 5w-30, 10w-30 ect.

For example I recommend Mobil 1 (so does MB) if you want to go that way:
0w-40 Silver cap
5w-40 Yellow cap (called truck & suv oil at Walmart)
15w-50 Red Cap
will be fine.

Or off the top of my head:
Castrol 10w-40
Pennzoil 10w-40
Castrol Syntec 5w-50

See where I'm going? Any oil that is at least a 40wt on teh upper end is fine.
As for coolant MB stuff or Zerox (sp?) are the only ones you should use.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Thx.. I would have searched but I'm time constrained here

So xxWyy

xx the lower is better for cold start ups?
yy the higher is better for hot-temp running?



Sorry, I'm really dumb with engine oil

check here

http://www.whnet.com/4x4/oil.html

On my 190E, i used Lubro Moly fully synthetic 5w40. Excellent oil and make the valve lifters less noisy when cold starting.

Not just any Zerex. It needs to be Zerex G-05. In the tan bottle.

Don't fret much over the oil pressure fluctuations. Oil pressure changes depending on any number of variables:

1. Heat - the oil pressure drops as the oil heats up.
2. Engine speed - the oil pressure drops at idle.
3. Age - the oil pressure drops as the oil ages.

Unless you're using synthetic oil in the engine, I vote for using anything between a 10W-30 and 20W-50 weight during the heat of summer. I wouldn't fret too much over the weight of the oil, as long as it's reasonable. You're correct with your logic on how to interpret the two oil weight numbers.

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95 E320 Cabriolet, 169K