common sense tells you if you see "rem inj for MB" on them means reman injectors right

i found that out while poking around my car today trying to see if i have heat... yes i know you dont need heat in florida.. but im skinny i have no insulation and i like to be toasty reminds me of my life i had in CT also my glowplug light seems to have stopped working when i first got the D it lit up when id turn the key and wait.. now it does not.. although the D started fine in 40 degrees F

another concern.. i started my car and the gas guage was on R i turned to fiddle with the climate control and it was up to 1/4 tank.. ooook