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Originally Posted by clicq
- I just thought the crankcase ventilation system should be able to cope with any of the blowby gases produced. I guess it can only handle up to a certain amount, and quite sadly, my engine is probably putting out more than that. I guess I should be thankful the engine still starts  .
There is definitely oil going up the breather tube (oily residue on the inside of the tube, elbows, and in the air intake).
I did change my glowplugs recently (I actually went to parallel glow plugs in December), so the engine is probably not in good shape. (I'm also 15W-40 dino oil, Mobil Delvac, which probably doesn't help the starting situation any.) The rest of the car probably isn't in good enough condition to warrant rebuilding the engine either, sadly  . |
The crankcase ventilation copes with the blowby just fine, unfortunately, the oil separator does not. Once a sufficient amount of oil is escaping the crankcase, the oil separation capability is not present anymore and the engine burns the oil. This is, of itself, not a terrible thing, until it progresses to where the engine actually continues to run on the oil from the crankcase.
Since your glowplugs are all new, this lends further credence to the weak condition of the engine.
The 15W-40 dino oil isn't going to give you any problems starting the engine until it gets down around 20 degrees or so. Then you might begin to notice some reduced cranking speed. Of course, you need all the speed you can possibly get with that engine. If you intend to keep it for awhile, my recommendation is to keep a large battery (850 CCA) that is not more than two years of age in it at all times.
You probably don't want to run synthetic in it due to the amount of oil consumption, but, if you have to start it routinely below 32 degrees, with no block heater, you might reconsider.
You have made a wise decision not to invest in rebuilding the engine if the body does not warrant it.