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#1
06-02-2007, 01:10 PM
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I'd run 20/50.. Esp. if you Drive the car at all. Mercedes calls for heavier oils in these cars.
More importantly is the additive package in the oil you are running. Most of what's out there is not what the Engineers had in mind when your engine was designed. Jonathan
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Blue Ridge Mercedes Jonathan Hodgman http://www.blueridgemb.com/ Enthusiast Service, Restoration & Tuning. Follow Us on Facebook! Located in the Atlanta area Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines. Mercedes Repair Atlanta 
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#2
06-02-2007, 02:26 PM
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in my 84 500sec i was happy with mobil 1 10w30.
tom w
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#3
06-02-2007, 02:56 PM
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For Dino, go any old 15W-40...
...as in Delo, LongLife, Rotella, etc.
100% Synthetic Amsoil AME 15W-40 is easily a 15,000 mile oil in these cars: just remember to change out the filter at 7,500, at the very least. I change my filter every 5K, top off & I'm good to go!  Cheers!
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'91 420 SEL @ 199K, '92 SVX @ 181K, '93 SC400 @ 86K, '93 Kaw ZX-11 @ 30K, '87 F250 @ 181K , 2001 Valkyrie Interstate @ 6K, Y2K Honda NightHawk 250 with 1.5K, '88 420SEL I.@ 179K & the 2nd latest, an '88 420SEL II.@ 210K runnin' parts car, '85 F150 300/NP435
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#4
06-02-2007, 10:12 PM
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In my 4.5 i stick with 10w30 or 40.
I found 20w50 WAY too thick and I wouldnt think of 5w30 in an engine I drive that hard and gets that hot. I would go with 10w30/40 in any m116 or m117. People tend to put in thicker oil in these and it winds up putting a lot of sludge in the cam oiler tubes, cutting off vital flow.
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Current: 2021 Charger Scat Pack Widebody "Sinabee" 2024 CR-V Hybrid Previous: 1972 280SE 4.5 2018 Durango R/T, 2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi" 1999 Chrysler 300M - RIP @ 221k
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#5
06-02-2007, 11:58 PM
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20/50 if you look in your owners manual covers a wide range of temperatures. I would run 10-40 in winter living up north, but most def. not in summer.
Not sure who told you 20/50 clogs your cam oiler tubes with sludge, but the weight oil you run has absolutely nothing to do with sludge. How often you change it, how hot your engine runs...that has direct effect on sludge. All of my cars run either 15/50 or 20/50 and I can promise you they are as clean as can be. Jonathan
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Blue Ridge Mercedes Jonathan Hodgman http://www.blueridgemb.com/ Enthusiast Service, Restoration & Tuning. Follow Us on Facebook! Located in the Atlanta area Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines. Mercedes Repair Atlanta
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#6
06-03-2007, 01:27 AM
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cdplayer
Quote:
Helped to improve compression. So I went one step further and put Mobil 1 20/50 right after I got her. Boy, does this stuff clean out your engine. Cleaned so well, began noticing oil leaks. After 5000 miles, I went back to Castrol 20/50 (dino oil) for high mileage engines. This oil has additives that actually swell those tired gaskets and slow down(or stop) those pesky oil leaks. Cured my leak problem after 2000 miles.
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 Selling used Mercedes parts on Ebay...always changing... cdplayer51 take a look! ____________
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#7
06-03-2007, 02:08 AM
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Quote:
Look at your owner's manual and stick with what the engineers who designed your engine recommend.
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Current Benzes 1989 300TE "Alice" 1990 300CE "Sam Spade" 1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007) 1998 E320 "Orson" 2002 C320 Wagon "Molly Fox" Res non semper sunt quae esse videntur My Gallery Not in this weather!
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