The difference between nice-on and fas

[chilimac02]

good job guys

[phoebeisis]

I need to get another set of eyes and a stopwatch. I just have trouble believing that I wouldn't get slightly better FE in N than in D. My crude eyeballing and counting seems to indicate that D and N are the same in the 25-40 mph range.

I would certainly do better if I shut off , but it is just too much for my 57 yo brain to manage safely.On my 1st rolling shut down I shut down in D ; needless to say I didn't glide very far in D with the motor off. With more practice I could manage it , but I have to pay more attention to my driving (beside engine is old,so is trans-206,000 miles 11 years). Another problem - already mentioned - is that big motors older vehicles (5.7 V-8) seem to take longer to warm up . I get no benefit from shutting off at a 30 second stop until it is fully warm- maybe 5 miles in the summer.

Shutting off in the glide saves plenty of fuel, but too tricky for me. I have my limitations.

Charlie

[bomber991]

Alright so I checked, and my DRL's stay off during a FAS.

Well this tank I did shutoff at most of the long stoplights, no a/c, and I did do some FAS P&G's. I ended up with 31.6mpg. The only similar driving I have to compare to this one is the 30.86mpg I got driving in the similar area with no a/c on.

So I got a 2.4%ish increase. It seems like to me I was getting more aggressive with the FAS's towards the end of the tank. So I wonder how I'll do next time.