is it common that ppl use 0w-20 on the FIT or ppl rather stay with what was recommended by the manual?

 

I seem to remember reading that 90% of all engine wear occurs in the first five minutes after a cold start. If one assumes the foregoing to be true, the 0w-20 would reduce engine wear by lubricating the cold engine quicker. At normal operating temperatures both oils have the same viscosity and lubricate equally.
Personally I am running 0w-20 now. It is hard to find where I am. I record no significant difference in mpg between 5w-20 and the 0w-20. If you do short trips and lots of cold starts 0w-20 should reduce engine wear overall.

 

that might be another reason, recently i hardly warm up my car then drive, esp. when i was in the hurry. so if i am running 5w-20, if i warm up the engine a bit before running it, would that work the same as using 0w-20 for cold starts often?

 

yeah technically it should. And i read somewhere that most of your gas is lost at idle, while warming up the car.

 

i run 0-20, i average 42 mpg in an 08 sport 5sp. dunno what 5 w 20 would do but wouldnt think it would be more than a few 10ths of a gallon,,, I have gotten as high as 49 and as low as 32 mpg .... mobil one follower howver i am considering the new syntec

 

dang, that's pushing it very far, 42....well, i guess i'll watch the foot and maybe take good care of warming up the car a bit more,

thanks for the advice peeps, anymore opinions are welcome!

 

just an fyi, when you warm your car up, its getting 0mpg.

 

oh really?

 

yeah. if you are driving you are getting better than 0 haha. and it is bad to warm up your car.

 

is that right? huh, i didnt know that!

 

yeah. in the morning my scangauge reads like 20mpg until my car is warmed up on the drive to work. at about the same time i get on the freeway and mpg JUMPS

 

hmm, maybe i should install a scangauge just like yours!

 

its the best way to monitor your fuel economy. REAL TIME.

 

will do!

any other opinions about how engine oil would affect mileage, all welcome!

 

exactly

when u coast down a hill with the engine off u get infinity mpg

 

yep! fas ftw!! i do that 3 times on the way to work and 3 times on the way home.

 

I currently have some Mobil 1 0w-20 in the car and its made absolutely no difference at all in mileage (Tofuman has confirmed the same experience). At $7/qt it's not worth it. I'll be changing to Pennzoil Platinum 5w-20 with the next oil change as its every bit as good as Mobil 1 but significantly less expensive.

I get 35mpg on avg driving fairly conservatively...grandmalike . I can get 36-37 or as low as 32 with a heavier R foot. I lost 3 mpg avg after changing from the stock Dunlops to much stickier (and heavier) Bridgestone 760 Sports though it does handle waaayyy better .

 

The main difference to the user between 0w-20 and 5w-20 is in the first few seconds after a cold start. For a period of seconds where the engine is warming up to normal working clearances 0w-20 reduces engine wear.

Is this critical to the average first owner? Not in the lower 48. If you are one who drives 100,000 miles per year and keep the auto for over two years it could save a major engine repair cost.

As many have said before mileage is inversely proportional to the weight of the foot on the go pedal.

 

i switched from valvoline 5-20 synthetic to 5-20 royal purple and i get about 50 or more miles to my tank, iono about you guys but i always loved the feel of the purple stuff haha

 

Generally I have my oil changed at the dealer using OEM filters/oil and averaged about 32 per gallon. Although I had to get my last oil change at a Jiffy Lube (oil life was really low and I couldn't get time to do it myself and couldn't get to the dealer until the weekend) and have only been getting 26 mpg average, best was 29 mpg. And that was driving like a granny. I don't remember what oil they used because it was a while ago (going into the dealer for oil change this weekend, along with an alignment).