06 crew cab long bed XL
so my truck has been having some really long cold starts, and running rough once it does. ( avg 80 degrees out past week or so)
went to start it 2 days ago to move it over to the driveway to start messing with it a little bit, do an oil change etc. batteries are totally dead( after 2 days sitting)
decide that since im going to PA next week i should do my 50k service early and get new batteries.
so i purchase 2 duralast gold batteries, hop in, and move the truck over to my driveway.
fuel gauge shows a little less than half, tuner shows 43%.
i do the oil change, and then decide to do a fuel filter change as well.
im on my way to pickup the filters and the truck shuts off on me 3 times.
the 4th time when i restart it it says low fuel and the gauge is at zero.
i was right by a fuel station, so i fill it up with 25.5 gallons, gauge goes back up, tuner says 99% no issues.
i change the fuel filters, everything goes according to plan, drain the water seperator, is this is a normal amount? it was about a half quart or so.
my question is, should i assume that my fuel gauge is F'ed up and refill whenever i can until i get it fixed/looked at?
or was there something about really old crappy batteries that were the wrong size that could cause my trucks to run like crap, not want to start and when it does blow white smoke, and get 15 mpg?
since the oil change and filters and batteries ive been getting 18mpg, truck starts right up, and runs perfectly, no white smoke.
last oil change was 5k ago, last filter change 10k
sorry if i am rambling, just trying to make sure the truck will be good for a 200mile trip towing my mustang in the enclosed trailer in a week when i get back from vegas