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#1
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Does anyone here use ZDDP?
Does anyone here use ZDDP? do these old benz's use non-roller lifters (whatever those are)
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Ben 1987 190d 2.5Turbo |
#2
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Roller lifters have a roller in contact with the cam lobe rather than a sliding metal-on-metal contact. None of your MBs uses roller lifters.
Sixto 87 300D |
#3
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Quality 5w40 oils have enough ZDDP in them already.
-J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. |
#4
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almost. current oils for gasoline engine have about 1/2 the ZDDP that is in diesel oils. ZDDP is not too good for cats so the trend is to reduce its content. Automakers are offering 100K mi warranty on the cat so they are forcing the oil co to reduce ZDDP content.
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2010 ML350 Bluetec 2012 Mustang Convertible |
#5
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Lots of aircooled motorcycle guys have their panties in a wad over this, but it's basically irrelevant to Mercedes.
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Kent Christensen Albuquerque '07 GL320CDI, '10 CL550. '01 Porsche Boxster Two BMW motorcycles |
#6
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Read the article beginning on page 3 of this link:
http://stlouisncrs.org/news_files/St_Louis_NCRS_Chapter_July_2011.pdf I don't know about more recent Merc engines, but my M103, like my '63 Corvette, Cosworth Vega, and '91 MR2 have sliding surfaces in the valvetrain, so I follow my own advice and use C-category oil in all. Given low mileage, low rate of mileage accumulation, and low oil consumption on the catalyst cars, I'm not worried about aging the catalysts. Duke |
#7
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Due to rebates and coupons , I just scored free 5 gal each of Pennzoil Ultra and Platinum that I was going to use in the 380SL. Now I am afraid they may not have enough zinc. I need to figure if they have enough or buy some zddp or just return them to Wally.
edit: I suspect they don't have enough zddp. I am going to buy a can of Rislone zinc additive that seems to be $8 at Advance Auto, to make this "free " deal worthwhile. We are going to have to pay attention to this in the future. I had been using Mobil 1, but certain formulas ( I was using 15w-50) have had the zinc removed.
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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??) Last edited by rs899; 08-02-2011 at 09:17 AM. |
#8
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Duke,
Great article. From what you wrote it seems reasonable to use a CJ-4 oil instead of synthetic Mobil 1 in the 3.2 liter engine in my 1999 clk320, and the only ill effect would be a miniscule reduction in the oil company's earnings
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87 300e (white/black; amg body kit) 88 300ce (red/cream; amg body kit) 93 300ce cabrio (white/blue/blue top) 93 300ce cabrio (black/grey/black top) 98 ml 320 (totaled @ 137,000 miles) 99 clk320 (black/grey/black top) |
#9
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Amsoil Premium Synthetic Oil with added ZDDP will keep hydraulic compensators nice and quiet.
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#10
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Just use CJ4 rated synthetic oil.
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CENSORED due to not family friendly words |
#11
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My machinist tells me the ZDDP was removed because although it helped reduce wear, it had a negative impact on mileage. The car manufacturer's don't care about when your enngine wears out but they do care about reporting the highest MPG.
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88 300e 89 300e 93 400e 93 500e 77 308 GTB |
#12
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It has a bigger effect on catalyst life.
-J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E. |
#13
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Your machinist don't know jack
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2010 ML350 Bluetec 2012 Mustang Convertible |
#14
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Quote:
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2010 ML350 Bluetec 2012 Mustang Convertible |
#15
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ZDDP and Phos are very important anti-wear additives.
For the most part is found in larger amounts in "Diesel Engine Oils", but they are suitable for Gas cars. I use Mobil 1 Turbo Diesel Truck 5W-40 in my Porsche car.
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1999 Porsche 996 Carrera Convertible 1994 420E - SOLD 1986 300E - SOLD, what a car 609 Certified |
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