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#1
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differential fluid
Hi,
I have read some old threads saying that mobil1 is good and cleans well, others that say it balooned up the rubber and messed things up. I use it inthe locker on my chevy truck, and it works great. However that has a gasket that must be replaced every time the fluid is changed. My question is does the rear on a 123 car have a gasket? If so, will the mobil1 leak through, or is it such high viscosity that diffusion through any gasket would be negligible? Also, am I safe draining the fluid, putting mobil1 in and then driving it for a year? I can imagine the suspended particles will have a wearing effect, especially at high concentrations. I dont knwo the last time the fluid was changed, but I dont currently have the time to replace it twice in a short time. Any info would be great. Thanks JMH |
#2
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The rear cover is "glued" on with sealer.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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There is no gasket on the pumpkin. I just put on a thin smear of silicone sealer and bolt it up.
I don't know that the synthetic will help anything in a rear end, but hey, couldn't hoit!
__________________
Ed 1981 300CD (Benzina) 1968 250 S (Gina) 266,000 miles! 1983 Alfa Romeo GTV6 (Guido) 1976 Jaguar XJS-saved a V-12 from the chevy curse, what a great engine! 1988 Cadillac Eldorado (better car than you might think!) 1988 Yamaha Venture (better than a Wing!) 1977 Suzuki GS750B 1976 Yamaha XS 650 (sold) 1991 Suzuki GSX1100G (Shafty Gixser) 1981 Yamaha VX920RH (Euro "Virago") Solex Moped 1975 Dodge P/U camper "Time spent in the company of a cat, a beer, and this forum, is not time wasted!" |
#4
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The differential is actually the only place I will use a synthetic on my diesels. My opinion only, but I'm not going to use synthetic ATF or motor oil. But for the differential I do like Mobil 1 gear oil.
Although the differential cover is sealed with "gasket-in-a-tube" liquid sealer, there are still conventional rubber seals for the half-axle shafts and the pinion seal that could possibly have a problem. Haven't had any problems myself. And the differential is quieter too. Ken300D |
#5
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I am curious as to why you don't use synthetics in the engine, trans.
Cost?
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Ed 1981 300CD (Benzina) 1968 250 S (Gina) 266,000 miles! 1983 Alfa Romeo GTV6 (Guido) 1976 Jaguar XJS-saved a V-12 from the chevy curse, what a great engine! 1988 Cadillac Eldorado (better car than you might think!) 1988 Yamaha Venture (better than a Wing!) 1977 Suzuki GS750B 1976 Yamaha XS 650 (sold) 1991 Suzuki GSX1100G (Shafty Gixser) 1981 Yamaha VX920RH (Euro "Virago") Solex Moped 1975 Dodge P/U camper "Time spent in the company of a cat, a beer, and this forum, is not time wasted!" |
#6
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First of all you can understand this is a matter of opinion.
Cost is a factor. I believe the oil needs to be changed often in a diesel due to the soot that gets thrown into the oil by the diesel combustion process. I can understand how a synthetic provides superior lubrication, however I think "oil change" is more important than "many miles between changes" as in a synthetic. A similar line of thought for the transmission. Dirt wears out a transmission far faster than anything else. So change the fluid and filter regularly, at least once a year. But I do get some synthetic properties from the oil additive I use with every change - STP Oil Treatment. Now there's a controversial topic. Ken300D |
#7
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I use synthetic everywhere I can. Mobil Delvac-1 in the engine. Mobil synthetic ATF in the transmission. Redline synthetic in the differential (just changed this one yesterday). I hope my MB (and all my other vehicles, except the toyota camry) last forever. The cost for synthetic over standard oil isnt that much of an increase when I look at the cost of maintianing my current vehicles or the car payment on a new one. Synthetic doesnt add that much to that number, so I go synthetic.
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Matt 2003 Jetta Wagon TDI 145,000MI 1999.5 Jetta TDI 287,000MI 2001 Suzuki SV650S 26,000MI 2008 Yamaha Vino 125 11,000MI http://www.crazymatt.org |
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