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Seems like I'm getting better. Something like a 28 mile round trip to the far away post office again. 45mph for the not so major back roads and 55mph for the main one (bulk of the trip), got to the post office with 53mpg, got back and the scan gauge says 55mpg. Windy day, think it said 63F which is similar to the last time I went there if I remember right.
Might not be insane numbers, but it's slowly getting better with just driving style. Overall tank according to the in dash display says 51mpg.
I'm just about caught up on orders for my business, so besides restocking I should be having some spare time soon to mess around with a better lower grill block, upper grill block, smooth belly pan at least for the front of the engine area and probably install the hitch I bought. Wheel covers I suspect will make a bit of a difference too even though it has the stock rings yet.
It seems to me I still hear a slight miss sometimes coming from the engine, I should scope it and see if I can pair up the feedback signal to the noise I've been hearing once in a while.
Oh, also the car sat for a couple days with out driving, and battery was at 12.1v according to the scan gauge. Based on a google result, that should be about 55% state of charge. I was reading 120ma draw with all the electronics sleeping, so assuming that's the average draw, the battery had about 6ah of draw on it (72wh). This should mean the battery's capacity is around 11ah (132wh) so I think it's pretty safe to say the 12v battery is on it's way out. I guess the missing puzzle piece would be how fast is it self discharging, 2 days should be basically zero effect unless the battery has a higher than normal internal draw.
Anyway, the prius is down to about 50% tank left, so should be interesting to see if I can fill up roughly at 17.5% again and see if it takes the same amount of fuel roughly speaking.
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