I would leave the 5w30 in the sump for the entire oci and then go back to an xw40 next time. A good compression test should set you mind at rest if it’s just driving you crazy.I agree... I have the same thougt but I just bougth 100 dollars of fine 5w30 oil. That sucks
Did piston soak increase my oil consumption?
- Thread starter daan
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I would not mess with any additives or cleaners just yet, you don’t know that car and the engine yet. Do normal maintenance with the approved oil and monitor things.
I don’t know but…all the charter fishing guides that I’ve ever been fishing with swear by it. When they put 1,000 hours a season on their motors they use what works. Not a good answer but that’s what I know. Give me time and I’ll make stuff up….
I have noticed lots of Audi's with excessive oil consumption
No idea.
I am going to go with China.
I would most def run a HDEO in these and a bit heavier viscosity from what manual recommends.
How heavy exactly? Recommended is 5w40. Do you mean 5w50?
Perhaps 10W-40 to begin with. I red your original post more thoroughly, you filled with 5W-30 i see. That might be a bit too light considering Audis burn oil.
1. VW 502 00 comes in 10W40.
2. 10W40 is not thicker(heavier) then 5W40. With your theory it would lessen oil consumption only before operating temperatur.
Edit:
Ahh darn it. 502 no longer seems to have 10W40 on the list, it did 2017.
https://erwin.volkswagen.de/erwin/downloadStaticFile/volkswagen/files/oil/step_50200_50500.pdf
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I had some similar experiences, changing oil brand and viscosity can led to different levels of oil consumption.
For example, my old BMW N52B25 with piston ring and valve stem seal issues had lowest oil consumption on Castrol 0W40, while Shell Helix Ultra 0W40 was a little better than Mobil 1 0W40. Note Shell has the lowest actual viscosity at 100C among the three.
Seal swelling additives like LM oil saver helped in my case too.
One of the earlier replies were right about e-dipstick only shows thresholds on the dash, so that may not be an accurate measurement of actual oil loss. However, a scan tool might be able to display the raw readings down to the millimeter and allow you to track oil levels more accurately.
Alternatively, you could just fill it back up again, and let it go through the entire range (until it need anothet 1L added), this would be more accurate (BMW actually measures oil consumption for warranty purposes this way). Do not overfill though, the sensor may not pick up as much as 0.5L over spec in my experience.
If I were you, I would keep tracking the consumption, try oil saving additives, and switch oil (one at a time, if the situation doesn't improve) to get a better idea of things.
For example, my old BMW N52B25 with piston ring and valve stem seal issues had lowest oil consumption on Castrol 0W40, while Shell Helix Ultra 0W40 was a little better than Mobil 1 0W40. Note Shell has the lowest actual viscosity at 100C among the three.
Seal swelling additives like LM oil saver helped in my case too.
One of the earlier replies were right about e-dipstick only shows thresholds on the dash, so that may not be an accurate measurement of actual oil loss. However, a scan tool might be able to display the raw readings down to the millimeter and allow you to track oil levels more accurately.
Alternatively, you could just fill it back up again, and let it go through the entire range (until it need anothet 1L added), this would be more accurate (BMW actually measures oil consumption for warranty purposes this way). Do not overfill though, the sensor may not pick up as much as 0.5L over spec in my experience.
If I were you, I would keep tracking the consumption, try oil saving additives, and switch oil (one at a time, if the situation doesn't improve) to get a better idea of things.
After almost 10k km I have an update on this subject. My oil consumption decreased dramatically with 5w40. I drove 7k km and then the fill oil indicator showed up. For Audi standards this is very reasonable. I changed oil and drove to Italy (3k km) with no decrease on the digital indicator. So I am a very happy camper
At the rate the oil consumption seems to be, just add higher viscosity oil and the consumption should decrease. I wouldn't dump the new oil.
You're right, the seller is likely to have overfilled as much as he could get away with, to stop you returning to him before you even got home.
if it was a solvent that was used, it would have gone through the pcv by now, they evaporate quickly. Unless they used a polar oil like bio-diesel.
yes toluene and acetone are freely available.
isn't that the soak when you experienced misfires? took up to 30 minutes to run properly, so the stuff doesn't really like to burn.
I don't think you understand my point. The oil consumption is close to nothing now in terms of Audi standards and is like it was when I bought the car. With 5w30 it was 1 liter/ 800 km. Now with 5w40 it is 1 liter to 7000km. So almost 10 times better. The seller did not overfill it when I bought it. The point is that the viscosity is a very big factor in my case
My experience with Audis is that while yes, that era of motors was very prone to oil consumption, it is made much worse by neglect and cheap oil. I've seen frequent (~3000km) changes with M1 0w40 bring consumption back down to "normal" levels, no flushes, cleanses, additives or fad diets necessary.
the viscosity difference is 10% or less, While I don't doubt the difference in oil consumption, it's not due to going up 1 grade.
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