Hi,
He says he is using a pair of these
http://www.cat.com/cda/layout?m=52432&x=7
If they are new then a use trend needs to be established by regular checks especially if they are being run at or near 100% load ( the time they can be operated at 100% loading will depend upon the rating which is not given in his first post).
Garry Hartshorn has described the best way to set yourself up. But please bear in mind that the turbulence in one of those at full power may make the use of a dipstick useless as the whole stick will be splattered with oil.
A modern engine like the C32 may well have been supplied with an Oil Level monitoring set-up on the Caterpillar monitoring system which would do the same job as a Murphy Switch and you can see it( the oil level) from the wheelhouse as many times a day as you want.