Crankase Bleeding/Breather PVC - Please Explain
#16
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Here's one well known company's take on carbon buildup:
https://team.valvolineglobal.com/diy...carbon-buildup
#17
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From the Valvoline article ...
Ford, for example, has gone from direct injection only on its EcoBoost engines to dual systems of both port and direct injection.
So a bit of vented gas getting into the intake ... that's a good thing.
Meanwhile, that article also mentioned an easy clean technique. Curious.
Ford, for example, has gone from direct injection only on its EcoBoost engines to dual systems of both port and direct injection.
So a bit of vented gas getting into the intake ... that's a good thing.
Meanwhile, that article also mentioned an easy clean technique. Curious.
#19
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i remember the old Seafoam method whereby one took the brake vacuum booster hose and sucked in the liquid while the engine was running.
#20
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This was recently discussed in another post. The P car engine authorities that be, have recommended, at least for the 997.2s, to fill
the oil level to one or two segments below the Porsche suggested level on the electronic gauge. The level according to the manual
apparently can overload the air/oil separator. That solved my problem of smoke at start up.
the oil level to one or two segments below the Porsche suggested level on the electronic gauge. The level according to the manual
apparently can overload the air/oil separator. That solved my problem of smoke at start up.
Last edited by bheit1; 02-10-2024 at 06:16 PM.
#22
Burning Brakes
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I'm sure the 987.1 has a purge system as well, pretty much every modern car does.
#23
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Yea, I kinda doubt that gas evap system would be significant.
I just posted a question on "The Porsche engine gurus" facebook page... fishing for data. Check it out there (my post is waiting to be admin approved there).
Regarding that Valvoline procedure... there are plenty of DIY vids out there showing before and after with similar stuff (I assume) and some show miracles while others just show the carbon turning a bit gooey but still caked on. Who knows?
Peace
Bruce in Philly (now Atlanta)
I just posted a question on "The Porsche engine gurus" facebook page... fishing for data. Check it out there (my post is waiting to be admin approved there).
Regarding that Valvoline procedure... there are plenty of DIY vids out there showing before and after with similar stuff (I assume) and some show miracles while others just show the carbon turning a bit gooey but still caked on. Who knows?
Peace
Bruce in Philly (now Atlanta)
#24
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This was recently discussed in another post. The P car engine authorities that be, have recommended, at least for the 997.2s, to fill
the oil level to one or two segments below the Porsche suggested level on the electronic gauge. The level according to the manual
apparently can overload the air/oil separator. That solved my problem of smoke at start up.
the oil level to one or two segments below the Porsche suggested level on the electronic gauge. The level according to the manual
apparently can overload the air/oil separator. That solved my problem of smoke at start up.
I've always run at the bottom bar for just the above reasons plus concerns over thermal expansion (I've seen 275F on my oil temp gauge). But if I park on a side to side slope, I can still get a smoke screen on start up.
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Graufuchs (02-11-2024)
#26
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#27
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Typical me... doing things differently... I fill to the top line. Never smoked, but I am usually parked on flat ground.
My logic (pretzel type) is that one more quart results in that much less use/stress on the oil. Just like changing the oil earlier. Correct? I dunno.
Peace
Bruce in Philly (now Atlanta)
My logic (pretzel type) is that one more quart results in that much less use/stress on the oil. Just like changing the oil earlier. Correct? I dunno.
Peace
Bruce in Philly (now Atlanta)
Last edited by Bruce In Philly; 02-11-2024 at 10:32 AM.
#28
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Does anyone know what the volatility of the Driven oils are - DT40, DT50, DI40, FR50?
Even qualitatively? And perhaps compare to the Valvoline low volatility oil?
Last edited by jchapura; 02-11-2024 at 01:20 PM.
#30
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Typical me... doing things differently... I fill to the top line. Never smoked, but I am usually parked on flat ground.
My logic (pretzel type) is that one more quart results in that much less use/stress on the oil. Just like changing the oil earlier. Correct? I dunno.
Peace
Bruce in Philly (now Atlanta)
My logic (pretzel type) is that one more quart results in that much less use/stress on the oil. Just like changing the oil earlier. Correct? I dunno.
Peace
Bruce in Philly (now Atlanta)
Oil temperature => thermal load => conversion to section #1
- Engine speed => thermal load + soot load => conversion to section #2
- Engine load => soot load => conversion to section #3
- Distance travelled + section 1-3 = total distance
The only effect that a little more oil has is of course the temperature, which does not rise as quickly. But the calculations don't take the fill level into account. I think the effect is more cosmetic but I wouldn't top up to the maximum -- on any car.