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1980 300TD buying ?s & oil preasure concerns.
I am looking at a 1980 300TD wagon tomorrow. 178K miles non-turbo 617.
My concerns: This car was passed over by another potential buyer because of the oil pressure. I asked the owner to start the car. At warm idle oil pressure was 1.5. I asked him to rev it to 2k rpm and he stated it read 2.5. Is this something I should be concerned with or is this normal? I will of course check for blow-by. I am also concerned when the owner mentioned that in the back of the car is a empty oil container by Quaker State that read 10w-40. This car belonged to his father who he said was a Mercedes enthusiast. This does not seem to be a diesel motor oil. I am hoping it was just back there to throw away and not used in the car. However if this car was run on non-diesel oil what should i look for besides blow-by?
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Current Cars: 1980 300SD 201k daily driver 1960 190D 468k My Dad's car i hope to get running 1 day 2004 Acura TL 3.2 32k 1997 Honda Civic 63k 1989 Jeep Cherokee 166k 1960 GMC 1-ton 4x4 350ci v6 56k 1984 Ford F350 150K 1-ton crew cab dually 1976 Ford F350 157K crew cab 4x4 w/354 Perkins, Clark 5spd, Browning 4spd |
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
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I am wondering if the wrong oil was used that might explain the low lower oil pressure at higher rpm.
I am really hoping this engine is ok. It has been a long hard search for one of these cars for me but I don't want to buy a money pit.
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Current Cars: 1980 300SD 201k daily driver 1960 190D 468k My Dad's car i hope to get running 1 day 2004 Acura TL 3.2 32k 1997 Honda Civic 63k 1989 Jeep Cherokee 166k 1960 GMC 1-ton 4x4 350ci v6 56k 1984 Ford F350 150K 1-ton crew cab dually 1976 Ford F350 157K crew cab 4x4 w/354 Perkins, Clark 5spd, Browning 4spd |
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Wrong oil or a weak pressure relief valve would be my guess.
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#6
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Incorrect or defective oil filter can cause low oil pressure. Best to avoid the filters made in India.
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Palangi 2004 C240 Wagon 203.261 Baby Benz 2008 ML320 CDI Highway Cruiser 2006 Toyota Prius, Saving the Planet @ 48 mpg 2000 F-150, Destroying the Planet @ 20 mpg TRUMP .......... WHITEHOUSE HILLARY .........JAILHOUSE BERNIE .......... NUTHOUSE 0BAMA .......... OUTHOUSE |
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I wish you good luck in finding a nice 617 powered TD, a large % of drivers swear by QS oil, the rest of us swear AT it... 10/40 oil was all you could get in the old days. qs is a good brand, I am sure it has at least CF rating, so as long as decent OCI was followed, that should not be the problem. the 123 oil pressure gauge is real, not sender, so that's not it. if it won't reach 3, as mentioned it could be a lousy filter, or it could be several other things. you may want to have the seller change the oil and filter and see where the op sits. if it was recently changed... walk away.
as a driver of a N/A TD, you may want to hold out for a turbo model anyway. PNW is a lousy place to find them for good prices in good shape, but I am sure you will. I have 4... sorry we are so far apart... none of mine are cherry, but they were all affordable. check the Craigslists, check ebay, look around. you will find the one you want.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
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On the turbo charged cars it needs to be 3 bar by 3k rpm.
Its a very old engine, with a very old guage. As long as it hits 3 bar at 3k drive it. Put some tape over it, if it bothers you!
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
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H is right. I've had a non turbo wagon- and loved it. It is not as slow as people tell you it will be, and last longer on average than the turbo model. Buy the car if the price is reasonable, and over the long run you will save money over the cost of other used cars, plus have the pride of driving a MB wagon.
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IMO, the more important thing is how often the oil was changed. Also, I love driving my N/A 1980 300TD. This car has lots of pep and actually feels lighter than the turbos for some reason.
178k is low for this car, IMO. If the body is in good shape and the price is right, I'd seriously consider it. Of course you gotta look at the condition of other things (vacuum, exhaust, suspension (sls?), flex discs, axle boots, tranny, etc).
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the sooner you start... the sooner you'll get done If it ain't broke, don't fix it.. Its always simpler to tell the truth... 2007 Honda Accord EX 2007 Honda Accord SE V6 96 C220 97 Explorer - Found Another Home 2000 Honda Accord V6 - Found Another Home 85 300D - Found Another Home 84 300D - Found Another Home 80 300TD - Found Another Home Previous cars: 96 Caravan 87 Camry 84 Cressida 82 Vanagon 80 Fiesta 78 Nova Ford Cortina Opel Kadet 68 Kombi Contessa |
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You're missing something here. 1980 wagons didn't have a tachometer. There was no way for him to find out if it's actually the RPM you wanted.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg |
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I truly love driving my 79 TD, due to it's spunky stop and go abilities. but on the highway the SD is kinda nice. I can't wait for my 85 Euro TD to get finished, so I can see how it is to drive.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
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Yup, spunky would be a good call.....another thing too with these circa is theres less stuff in the engine compartment to deal with.
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the sooner you start... the sooner you'll get done If it ain't broke, don't fix it.. Its always simpler to tell the truth... 2007 Honda Accord EX 2007 Honda Accord SE V6 96 C220 97 Explorer - Found Another Home 2000 Honda Accord V6 - Found Another Home 85 300D - Found Another Home 84 300D - Found Another Home 80 300TD - Found Another Home Previous cars: 96 Caravan 87 Camry 84 Cressida 82 Vanagon 80 Fiesta 78 Nova Ford Cortina Opel Kadet 68 Kombi Contessa |
#14
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Good point, if he's just guessing at the rpm it's probably OK. It sounds like the idle pressure is correct, so it's unlikely to be a real issue. It's probably easier to tell while driving it. BTW, if you do end up replacing an oil pump, the parts cost is around $5-600.
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
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