After a brief drive today, realized somthing was up** and parked it. From near the filter housing, a good amount of oil was dripping out. Loosened and retightened the housing, no change. Had a puddle of oil after a minute or so. Oil pump seems ok, will replace the pump mounting gasket for kicks. Been too freaked out with the quantity of (10-day old!) oil to poke my head under while she's running. All fittings and hoses seem ok. This was a not an oil drip and much as a slow drain.

**However, just before heading out, I dumped a 1/4 quart of ATF in the gas tank. The 109 board participants swear by using ATF as a fuel additive to clean out the fuel system. Is this oil leak possibly a result of this? All ideas appreciated.

The fuel system is not responsible for your oil leak........

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Eric Boyles
1980 450SL

I agree, but the timing did seem suspect. Ten minutes after adding something to my fuel, the car is hemorrhaging oil.

If it's from the housing, are you sure it isn't cracked? Are you sure the proper-sized O-Ring is in there, and in properly?

The oil coolant lines all are in that area. as much as you don't want to, you probably need to put the front end up on a ramp or something SECURE and look under it CAREFULLY while it's running to see where it's leaking from.

I'd say it could be the valve cover gasket, but almost anywhere that could leak, it'd leak out onto the exhaust and produce smoke. Less likely is the timing chain tensioner (if something snapped it though...)

Edit: I assume you mean a 4.5 (as most 109's are 4.5's, so if you're reading that forum...). If you mean a 6-Cyl, then ignore me~ And be more specific

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Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k

During the oil filter replacement, I failed to notice that part #44 was missing on my W114, M130.92 engine. Took a while, but the Oil filter housing cracked and I lost most of the engine oil. Apparently, part #44 also acts as a spacer, preventing contact between the filter housing and the base mount.

The p/n's for rubber filter elements are:
#42 is 000 184 1780.
#43 is 000 184 3280
#44 is 000 184 3380
See previous thread for picture. http://www.peachparts.com/shopfor...d.php3?t=101817

3 sets of these parts cost $28.08 at the dealer.

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1970 280S M130 engine- good runner
1971 250 M130 engine- #2 rod bearing, gone
1971 280SE (blown engine,parts car)
1977 German 280S W116-only 33 years old

Thanx guys. Car is a 2.8L 6-cylinder 280s. Filter housing is intact, the o-ring at the housing lip and the 3 other rubber filter items are in place and in good shape. Leak seemed to be in the oil pump/ filter area, so will jack it up and report back after replacing the oil pump gasket.