View Full Version : Checking Fluid Levels

07-06-2013, 03:02 PM
I am still getting accustomed to Inboard boats, coming from I/Os. I have a question regarding checking fluid levels in Motor and Transmission.

Yesterday, I changed impeller, motor oil and switched my 1:1 Velvet drive from gear oil over to ATF.

For motor Oil, I am not completely sure that I get a full drain from the crankcase, so when I refill I was wondering what level the boat should be at when I check oil level with the dip stick? As it floats in the water?

For tranny fluid, I was having trouble with the transmission slipping during hard RH turns, and with the help of this Forum and Velvet Drive, it seems that the problem is most commonly caused by low tranny fluid, so after switching from the original tractor oil to Dexron III ATF, how do I know I have the right amount? I assume I get it close, (1.5qt.) then after engine is at operating temperature, check fluid level immediately after shutdown?

I know these questions probably further prove how green I am when it comes to Inboard boats. I think I am starting to get a case of "I wish I had a MasterCraft OCD"

07-06-2013, 04:24 PM
i think you are headed in the right direction. for "level", i have the boat empty on water. for the fluids, i just try to replace what i took out and then check levels. i recently read on the tranny fluid that you aren't supposed to screw the dipstick in to check the level. agree with above that it does need to be warm.

07-08-2013, 01:11 AM
If the tranny has 2 rubber gaskets in it, test the level with only one inserted.