Friends, I would like to ask a question about an oil consumption. The third year I use Petrocanada 5W-20 oil. Oil and the original filter I change each 8000 kilometers. Good oil, but is one shortcoming: there is an Oil consumption (expense, oil evaporation), that is on each 300 kilometers I add about 50 grams of oil. At a forum on oils, I heard that at given oil there is such shortcoming as Oil consumption(expense, oil evaporation). I want to learn your opinion who else has Oil consumption (expense, oil evaporation), is normal process on the engine 3.5 Duratec?
Also has noticed that near spark plugs on a valvate cover of the engine, easy oil spots began to appear recently, it is possible isn't a problem, but I would like to pay your attention to it and to learn your opinion? I will show it on the attached image. Thanks.
p.s.: exhaust gases go without impurity, that is there are no traces of a soot and gray smoke, oil clean, without impurity, darkens only in use in process of the development. My style of driving now such that I don't lift engine speed higher than 2500 revolutions per minute
, therefore it can't be the cause too. Spark plugs I changed for 100 000 kilometers, 153 000 kilometers now.
Edited by EDST777, 15 June 2018 - 11:11 PM.