Back in the early 90's I worked @ Kragen auto which later became Orileys. We had Valvoline racing in 30,40,50,60 and 20w50.I'm not sure if anyone is interested but my brother has been using the straight Valvoline VR1 straight 50W racing oil. He has a Tracker with a Suzuki engine that makes a lot of timing chain noise and was burning a lot of oil between changes.
Since switching no more noise and it uses hardly any oil at all. We live in Southern CA so it never gets cold enough to give starting issues. I will say that the with the Fumoto valve that the motor has to be fully warmed up so it will drain out of the small hole.
I think when he says "blowing out" he means it is being sucked into the PVC valve not that it was actually exiting the engine, but I agree, the wording was awkward.
I drove flat-out the other day, 100MPH plus or minus 10 on wide-open highway for about 10 minutes, hard acceleration and cruise.. approx. 4000RPM sustained average. Had smoke coming from under the car when I was done. Noticed it when I pulled into the truck stop, I was reversing at a slow speed and I thought, did I just see smoke? and sure enough.. some smoke from under car. I suspect from the exhaust or trans. Opened up the hood.. saw from back part of engine too. I had recently "topped up" both my coolant and transmission fluid levels, so I suspect maybe some excess level was pushed out the vent of both the overflow bottle, and whatever vent valve on trans itself. Only fluid dripping was the water condensation from the AC, which was on.
Went in the truck stop, got my soda and pizza, drove the 5 more minutes to work at normal speed, 55MPH. No issues with the car, none at all, and it ran better the next day.
Two days later.. checked my fluids again, cold. I'm slightly over on the dipstick, not more than half a quart and my trans fluid looks good, almost like new as I have been drain and filling it twice in 10,000 miles not km. No issues.
I post all that, to say.. in an extreme use kind of scenario like this.. is the only way one would see oil on the back window if there was a leak from the rear main, catching the aerodynamics that then puts that oily mist all over the back of the car? (I did look hard at the back of my car to see if that is what happened, because I also know if there was an RMS leak, it would do that every highway trip. BTDT.) Or... Would the hard driving.. employ the PCV valve, engaging in crankcase ventilation, as you say.
No oil was burned, I am curious to see if that oil level goes down after a long OCI. It should be known I put Castrol Edge 0W-40 in there, and did not really have to add but a half quart when it appeared to be going low. Maybe I should read my dipstick better next time.
But. Would that be PCV operation? Or does just getting the engine/trans really really hot as per Italian Tune-Up like the car as my avatar also have its own ways of burning off oil, maybe sheer heat or forces exerted or ? (Blow-by produces smoke as well?)
I may have simply had a case of hot trans. Car runs better after this than before, so..
You could have just heated the exhaust more than normal, burning off crap that was on it that hadn't previously got hot enough to burn off. My Jeep has been burning the factory coating off the exhaust for months now and I think it's basically gone now, but if I drive it REALLY hard, I can get it to smoke (the exhaust) as I get further back hotter than normal, but that's getting harder to do now too with there being next to nothing to burn off now. My wife's new Borla cat back has been the same experience on the truck, towing the trailer brought back the break-in smell as the truck got the exhaust hotter than it would unloaded.
No seepage at all around the head gasket but some seepage around the rear main seal and oil pan gasket. Maybe Valvoline Maxlife 5w40 is my ticket.Have you checked the cylinder head for leaks? It's notorious on those older Benz engines.
No seepage at all around the head gasket but but some seepage around the rear main seal and oil pan gasket. Maybe Valvoline Maxlife 5w40 is my ticket !
JT20 : my cars always run better after an italian tune up and it stopped oil consumption some times !
I will see how it turns out now that the level is right in the middle. It would make my oil changes even simpler since it would only require one 5L jug. max=5.5L, min=4.5L in my car if i'm not mistaken.I would suggest filling the oil only to the midpoint on the stick. More than that just goes up in the PCV valve and into your intake. That's what I do on my MB's and even my Harley. The oil level never fluctuates. In the case of the Harley, there's no oil in the intake under the air cleaner. Give it a try.