You won't hurt it so long as you keep oil in it. I would check the following:
Check the blowby -- if you have considerable amounts at idle, you probably should do something. Oil separator in the air filter housing. These can leak (and the drain can plug) so all the recovered oil will go down the intake. It will cheerfully burn, but dino oil will also make zinc oxide ash, which will polish away the rings and cylinder walls. Check the valve guide clearance -- bad valve guide seals and loose guides can give you that much oil consumption. A valve job, done properly, will greatly reduce the oil consumption and increase milage and power quite a bit. You can also check the cylinder walls at the same time, at least on the ones exposed. Do a leak-down test. That will show if you have worn valves or cylinder walls. By 77 the valves were the weak point, not the cylinders as was true eariler. Look for a leaking crank seal -- you will throw quite a bit of oil out that way. Check for a bad filler cap (dirty oil around the cap). The seal goes bad and you can toss quite a bit of oil out there, upwards of a quart in 1000 miles. Usually only on the highway, too. Peter On Aug 15, 2008, at 10:05 PM, Robert Rentfro wrote: > My 300D is now using one quart of oil every tank of fuel (usually > 320 miles > or so). Using dingo juice. It not leaking out anywhere and it's not > being > pumped out by a haywire vacuum pump. The thing is running great. > > What am I risking breaking if I continue to drive this thing with > that oil > usage? This usage rate has been very consistent lately. It does get > a bit > less when I say off the freeway. > > > > Bob R > > '77 300D 193K > > '05 E320 55k > > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
