Got questions about a 1978 280CE 2.8 Gas. I don't have the owners manual.

What spark plugs does it take? Gap? (like 24 different ones come up in the parts store computer with varying gaps)
-Autohous is recommending the Bosch 7911 and they are saying it is pregapped

What weight oil does it take in the summer, and how many quarts. (unknown)

Are the air filters available at like Advance? (the advance website doesn't find an OEM paper filter)

Going to run a Road Rally in it with my girlfriend (time distance regularity) and I don't know when the oil was last changed and if I am going to drive about 300 miles it may as well be efficient as it can be on premium gas.

Thanks!

__________________
68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

If your car is Non-EURO then spark plugs NGK BP5ES, or denso W16EP-U or Bosch W9dc stock# 7511 these are non-resistor type. GAP off top of my head is 32 but check with whoevr you buy the plugs from.
by filter here at fastlane
http://catalog.peachparts.com/ShopByVehicle.epc?q=1978-Mercedes--Benz---80ce-Air--Intake&yearid=1978%40%401978&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6149%3AMBC%7C1492%3AED%7C10000026%40%40280CE&catid=240497%40%40Air+Intake&subcatid=240499@@Air+Filter&mode=PA

I run 20W-50 castrol GTX year round takes little over 6 quarts buy 7 quarts I use MANN filter your in hurry get a NAPA filter.

If your car is a EURO used colder plugs NGK BP7ES, or denso W20EP-U or Bosch W7dc

Thanks

It's a US spec car. I'll probably buy the NAPA filter this time around. Found out the plugs only have 600 miles on them and they look good so they'll stay but the oil, despite having 400-500 miles on it hasn't been changed in a year.

Next, valve adjustment, is there a good M110 how to? I keep finding conflicting numbers on what the gaps should be. This motor has been clackity as heck since the motor was rebuilt.

__________________
68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

May just be the engine sound, all M110s I've heard are quite mechanical in sound even when running in tip-top shape.

__________________
Nathan
'74 280C - gone to a new home for the finishing it deserves.
'64 356SC
'74 914 2.0

Some asked if it was a 300CD, it clacks that loud.

__________________
68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

Its gonna have a valve clatter, they all do. Have you adjusted the valves, they could be loose causing to much clatter.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

No I haven't adjusted them, that's why I was looking for a good how to. I googled it and found a few but no pictures and several different gaps.

__________________
68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

valve adjustment
http://mercedes.thatchermathias.com/w123CD1/Program/Engine/110/05-210.pdf