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  #1  
Old 02-22-2003, 02:38 PM
USMANDAR
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VISCOSITY issue

i wanna know what viscosity motor oil should i use in my 1993 400 e with 48,000 miles no one in my sorroundings seem s to kno w the answer for that
hope anyone out there could help me
thanks in advance
mani
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  #2  
Old 02-22-2003, 05:20 PM
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Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
If you call 1-800-FOR MERC they will mail you a dandy free brochure on recommended fluids and other service products.

Having said that, one thing for sure: no 5W30 or 10W30 oils are approved by MB.

Personally I use Mobil 1 15W50 year round. Despite the high-sounding lower number, it remains fluid down to very low temps. No trouble starting this winter despite below zero F temps.
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Steve
'93 400E
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  #3  
Old 02-22-2003, 05:25 PM
USMANDAR
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hey thanks for replying last oil change was at the dealer adn they used 5-40 and now after reading ur post i have no clue how big of a difference between 5-40 and 15-50 but the thing is also this that i only have little over 45,000 miles does that makes a difference
anyway i ll call for that brochure
thanks anyway
mani
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  #4  
Old 02-22-2003, 06:40 PM
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Haven't heard of 5W40 but Mobil 1 0W40 is now standard issue for new MBs I believe, so you should be OK.
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'93 400E
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  #5  
Old 02-22-2003, 06:59 PM
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oil viscosity what's right

All the auto manufacturers are 'recommending' 0W30 to 0W50 in their new cars. the reason is simple Corporate Fuel Economy (CAFE) penalties. Lower viscosity oil means higher fuel economy in the EPA mandated test cycle. They HAVE to use the oil viscosity recomended in th emanual, and a specification that is 'readily available in the market area (no magic mouse milk exotic stuff allowed.) AND so long as the engines make it to the end of the warranty period, the manufacturers are happy. Same with tranny fluid. More and more 'new engines' and tranny's are wearing out these days from the low visc fluid not keeping lubrication sufficient when either a warm spell, or a high speed run on the highway happens.

Pitty the poor second owner who has to shell out $15-20K for a new engine when the cams and rods wear out.

In the lower 48, excepting the real 'arctic' places that get colder than -10F regularly, there is no reason to use anything lighter than a 10W40. 15W50 synthetic is great for anywhere except Edmonton or Fairbanks or other similar un-inhabitable frozen waste lands.

Only the 'miracle' of cheap petroleum products allows man to settle in those places and drive cars anyway.
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  #6  
Old 02-24-2003, 09:14 AM
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I don't agree that using 0w oils are going to cause cams and rods to wear out... not prematurely anyway. Also, I don't know of any facts or history to back that claim up. I love to see it though if it does exist.

I owned a 92 Taurus SHO (#1 son has it now) with 100k miles. The car has never seen a 10w oil. 0w and 5w Mobil1 for it's life and the cams are visibly flawless. I know folks with 250k miles with ow oils with no problems. I too have heard the [occasional]stories, but have never personally seen a well maintained engine fail because of a "light" synthetic. The SHO saw a lot of 7k runs and with #1 driving it, I'm sure that hasn't decreased. In Southern New England in 2002-2003, we had temps ranging from -10 to +100. Try cranking any piston engine over with 15w-50 engine at -10... It'll go, but the 0w oils sure make a diff.

Now, having said that, I might be reluctant to use a 0w oil in SoCal, or Southern Texas year round where temps are consistently over 60 ish degrees...

Brian



Pitty the poor second owner who has to shell out $15-20K for a new engine when the cams and rods wear out.

In the lower 48, excepting the real 'arctic' places that get colder than -10F regularly, there is no reason to use anything lighter than a 10W40. 15W50 synthetic is great for anywhere except Edmonton or Fairbanks or other similar un-inhabitable frozen waste lands.

Only the 'miracle' of cheap petroleum products allows man to settle in those places and drive cars anyway.
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