Originally Posted by
ViperGeorge
Jeeze this must be the 10th thread on checking oil in a Gen 5. I had previously checked with the engineer that designed the oiling system. Either believe the engineer or not but I think he should know what the correct method is. Here's what he said:
“So like we discussed – the 15MY has the updated dipstick to decrease the likelihood of wiping (has the s-bend in it) – so it should be easier to read on a 15MY and later vs. previous years.
"The method you’ve mentioned (where the vehicle is warmed then sits for 5 minutes before checking the oil) is definitely the best method and you’re right, that is exactly what is in the manual. The reasoning behind it is that the engine will trap oil in galleries, components, etc and as you let the engine sit, that oil eventually drains down to the pan. It is a large engine and a large amount of oil can be left in the engine after shutdown. Thus showing higher on the stick when your car sits for a while. Having the warm oil level at the full mark 5 minutes after turning the car off ensures that there is the correct amount of oil in the car.
To answer your other question – it’s certainly reasonable to see large swings in oil level using those two methods to check the level. I would even recommend checking it within 1 minute of the 5 minute mark after shutting the car off – waiting to 10 minutes would probably show a completely different reading.
Additional Note: It says this in the manual, but be sure to park on level ground – not doing that can change the oil level dramatically as well.”
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