Am I the only one who wants all the dipstick readings to be exactly on the full mark?
Hopefully not, so my question is for the crankcase is it better to use all five quarts every oil change with filter and have the oil level about an inch past the full mark, or use less (4 1/2 quarts or so) to get the level at or below full mark?

 

When I had a stock oil pan on my motor, I typically used the full 5 quarts along with a new oil filter change. After the motor was started, run a few moments to fill the oil filter, then shutdown and left to sit a while for oil to fully drain back to the pan, the oil level would end up at the full mark on the dipstick.

 

I have noticed that as engines incur age and miles the same amount of oil will show higher on the stick.

 

That would suggest something using up pan volume... sludge?

Since there is supposed to be 1qt between the Full and Add marks on the dipstick, one would put 4qts in, run the engine for a minute, the put in the last qt.

Anything over the full mark is not good, as it is supposed to be damaging to the seals... on an old engine, I would think you have a greater chance of this actually occurring.

 

Theres no sludge in my engine and I have 220k.

When I cleaned the pan out when changing my oil pump there was very little sludge or anything in it. I think even on a poorly maintained engine that sludge accumulating in the plan would be miniscule in comparison to dipstick readings.

 

Having your oil over-full gives the crankshaft the opportunity to whip a great deal of air into it, and it just doesn't lubricate as well like that.

 

I pre fill the oil filter, install it, add 4 liters to the motor run it up, shut it off, let it sit of five min, check the level on the DS and top it off as needed. Going over is not good as posted.

 

I change mine, install the filter dry. Fill engine with recommended quantity per the owners manual. Start it, rev a couple times, shut it off, let it sit for a few minutes, check level.

 

Why would anyone not fill the filter with oil before putting it on?

 

When its at a weird angle, and get you more on you from the filter, than what stays in the filter.