I just check my oil by eyeballing the trailer to see if it's level. I suppose if you really wanted to make it perfectly level, you could put a bubble level on the trailer tongue.
Honestly, if the trailer isn't at a huge angle, it shouldn't make a big difference in the reading. I've checked mine on the water and on the trailer and the reading was super close either way.
Just remember to run it for 30 seconds and let it sit for 30 seconds before checking it.
Honestly, if the trailer isn't at a huge angle, it shouldn't make a big difference in the reading. I've checked mine on the water and on the trailer and the reading was super close either way.
Just remember to run it for 30 seconds and let it sit for 30 seconds before checking it.