3406c dipstick height/oil capacity

I remember having the same problem with a cummins/komatsu engine, drain oil, change filters, put in required amount of oil, start shut off and check and it would show about two gal over, drained two gals and ran it the next day and had to add two gals. On the next oil change I just ignored the over fill, ran it and it was fine, just one of those things you cant explain!

 

Put the amount of oil cat recommends run it a bit and mark that as full on the dipstick.. most likely someone bought or was given wrong dipstick for your engine.. call cat with your serial number and they will know the correct amount I'd be hesitant to run it 2 gallons low thinking it's correct

 

Where are you getting 10 gallons from? Oil capacity can vary even between 2 engines of the same model. Different oil pan configurations, oil pan sizes, etc. 2 gallons overfull can be just as bad as 2 gallons low.

 

How much are you draining out? Are you draining the front plug on pan (most older CATS have one up front) and also the lowest plug on rear of pan? Next time you change it pour it into 5 gallon pails and see if you are taking out what you are putting in. I know on some Cummins ISX engines you can drain the pan at the lowest spot and then drop the pan and there will be almost 2 gals still in the pan.

 

If the crank is churning the oil , over is worse then low. End up with a bunch of foam, and likely major oil leaks, and major oil use.

 

Is this after being ran?

Filter installed full or dry?

 

Here is some info you might find useful. It's dated back to year 94 and I know there is different pan configurations so be cautious.