Mobil 1 0w-30, I have some small results!
- Thread starter Chris71
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That's pretty big. What kind of variables are we talking? Different gas prices, driving style/speed, ethanol content, GF pushing the car, etc.? Just a switch from SAE 30 to 0w-30?
I would like to see mileage on a full tank fill up.
I just put 5w-20 in place of 5w30, my normal mileage is 16.5 mpg.
I just put 5w-20 in place of 5w30, my normal mileage is 16.5 mpg.
I'm envious, then. My car has had 5 different crankcase fills in the last 2,500 miles, and the largest MPG difference was 1.2 MPG between M1 0w-20 and QS 5w30.
It's not hard to believe at all. I took out a straight 30 wt. and went to a 0w-30. That has to be less drag on the crank when it's first started. So far we are only talking $2. That's a whopping half-gallon of gas. I'll try to do a full tank run soon.
UM.. You need a much larger sample size with an unknowing driver. (your expectations can influence your driving , can influence your results)
Originally Posted By: FZ1
Not questioning your veracity. A 25% improvement due to differences in these grades/types of oil is just not possible.
What he said.
Not questioning your veracity. A 25% improvement due to differences in these grades/types of oil is just not possible.
What he said.
What? 
I just jump in the truck and drive it(no expectations or influences). Tell ya what I'll do. I have a friend who drives 90 miles to work on Mondays, commutes 30 miles during the work day and then drives home 90 miles again at the end of the week. I'll get him to try the 0w30 and have him keep track of his mileage for us.
I just jump in the truck and drive it(no expectations or influences). Tell ya what I'll do. I have a friend who drives 90 miles to work on Mondays, commutes 30 miles during the work day and then drives home 90 miles again at the end of the week. I'll get him to try the 0w30 and have him keep track of his mileage for us.1% or so. That is the reasonable expectation you should have when switching to a more efficient oil. If you get much more than that then the first thing to do is question your data sampling. For example, on a fill of only two or three gallons, a very small difference in the amount that gets into the tank, because the car might be sitting at a slightly different angle when filled, is enough to create an error easily as much as 20-25%.
Unfortunately, even if you track your mileage over tens of thousands of miles, other variables will always get in the way of being able to accurately measure a 1% or smaller difference. You will just have to assume it is there and be satisfied with that.
Unfortunately, even if you track your mileage over tens of thousands of miles, other variables will always get in the way of being able to accurately measure a 1% or smaller difference. You will just have to assume it is there and be satisfied with that.
You also have to measure the temperature changes of the gas in the tank and correct for its effect on the fuel as well as the tank material. Fuel expands a lot when heated 30 degrees. You fill the car with cold gas from an underground tank, then it warms up to summer temperature, and you can gain 1/2 gallon in a 20 gallon tank.
I havent seen any change in milage in my Taco.
Originally Posted By: Chris71
I took a short trip to my friend's house and it took me $8 to refill when I got back. That was on 30wt. I recently switched to Mobil 1 0w30 and I made the same trip today and it cost me $6 to refill so I am pleased.
Cool.
Initial results can be quite satisfying. Like to see some long-term results of your switch as well.
I took a short trip to my friend's house and it took me $8 to refill when I got back. That was on 30wt. I recently switched to Mobil 1 0w30 and I made the same trip today and it cost me $6 to refill so I am pleased.
Cool.
Initial results can be quite satisfying. Like to see some long-term results of your switch as well.
How do you know you refilled it to exactly the same level in the tank? That's almost impossible to achieve, unless you are using the same pump at the same location with the same pump speed and filling it all the way up to the mouth of the filler tube...which is NOT recommended.
As others have said, it takes more than a couple of trips to make a reasonable judgement on efficiency. 1-2% difference is more in line with what more scientific studies have demonstrated due to changes in viscosity alone.
As others have said, it takes more than a couple of trips to make a reasonable judgement on efficiency. 1-2% difference is more in line with what more scientific studies have demonstrated due to changes in viscosity alone.
I have seen small impovments in my cars/truck also,it all helps
when you got $4 gas..
my P/U is what i've seen the biggest impovment in..i've been
running this oil long enough to know it's no dang "Fluke"...
when you got $4 gas..
my P/U is what i've seen the biggest impovment in..i've been
running this oil long enough to know it's no dang "Fluke"...
Why would you run a straight 30 wt? especially in PA?
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