Ford Performance diff cover has to fill points. My 2018 F150 has a 2" level. Do I fill to the lower plug or the higher plug.
Thanks.

 

Most of the FRPP diff covers don't show the instruction PDF available online but the one I found that does says to use the lower of the two plugs. The FRPP tech line/live chat guys are generally very helpful if you want a for sure answer.

https://performanceparts.ford.com/

-Steve