Royal Purple- MPG? Value?

[mikeriley1358]

Hi. I am new to these forums. I been reading them for a while and just now signed up.

I have a question about Royal Purple. I have a 2003 Ford Ranger 4.0. I have it programmed with a SuperChip set for Mileage XS Save mode. I am getting about 19 mpg combined.

I see a lot of forums saying Royal Purple oil gets better fuel mileage. Does it really? Also does the price of the oil and OCI worth getting a few extra mpg?

Thanks

 

[Garak]

If you do get extra mpg, it won't really be discernible by switching to RP, unless, of course, you're using something odd like 20w-50 now and are switching to 5w-20 or 0w-20.

Royal Purple is fine oil, but if you're looking to offset the cost of a synthetic by fuel mileage gains, you'll be disappointed, and that applies to all synthetics.

 

[HerrStig]

That's what we call having to do a "cost/benefit" study and you probably won't know until you establish a base line with a trial of RP. My bet is RP is better used for high stress applications, not gas saving.

 

[SteveSRT8]

While RP is fine, many other oils perform very well without purple coloring.

 

[cutter]

You'll get a higher percentage of mileage back if you correct some bad driving habits, if any. Unless you're already hypermiling and good at it, oil isn't the first place to start to get those mpg back. This is assuming your car is in tip top shape, a safe assumption since you have an account on this quirky site.

 

[bepperb]

"I see a lot of forums saying Royal Purple oil gets better fuel mileage. Does it really?"

No, not it does not.

The greatest correlation of an aspect of a motor oil to it's fuel economy is it's HTHS value. The lower this is the better fuel efficiency you will get.

Generally, a lower grade oil will also have a lower HTHS value. But, be sure to select an oil with a HTHS value at least as high as what your manufacturer recommends.

 

[daves87rs]

Originally Posted By: SteveSRT8
While RP is fine, many other oils perform very well without purple coloring.


+1


All the money spent on RP could be used for gas...

 

[Capa]

Not too many years ago BP (Castrol) took Royal Purple to task about their exaggerated mileage claims. Royal Purple no longer makes those claims

A thin synthetic 0W-whatever may yield some gains around the 2-3% mark. It seems small but if you do a longer OCI it could be somewhat substantial.

 

[SteveSRT8]

Really? No one here has ever been able to prove that. Only the manufacturers.

Such incremental gains are well within the margin of statistical noise.

 

[45ACP]

I am reminded of Castrol's "8X better wear protection" with Edge. And stupid commercials

I used RP 5W-20 and liked it, and preferred its "feel" to other oils not including Redline.. but most HATE RP so whatever. Also +1 to provability, as to SteveSRT8.

I can prove that the world was believed to be flat at one time. Accepted belief.

 

[Capa]

Originally Posted By: SteveSRT8
Really? No one here has ever been able to prove that. Only the manufacturers.

Such incremental gains are well within the margin of statistical noise.


Admittedly it is within the margin of error but, nonetheless, when I, myself, observe and measure about a 2% gain, you can bet I'm sticking with 0W oils

We have ethanol free gas in Oklahoma. The loss is about 3-4% if I use gas with 10% ethanol. That is also difficult to measure and within the margin of error but the gain with real fuel is there whether I can measure it or not.

 

[mechtech2]

Originally Posted By: Garak
If you do get extra mpg, it won't really be discernible by switching to RP, unless, of course, you're using something odd like 20w-50 now and are switching to 5w-20 or 0w-20.

Royal Purple is fine oil, but if you're looking to offset the cost of a synthetic by fuel mileage gains, you'll be disappointed, and that applies to all synthetics.


This is right. There is not much more to add to the equation.

 

[NHHEMI]

Originally Posted By: mikeriley1358
Hi. I am new to these forums. I been reading them for a while and just now signed up.

I have a question about Royal Purple. I have a 2003 Ford Ranger 4.0. I have it programmed with a SuperChip set for Mileage XS Save mode. I am getting about 19 mpg combined.

I see a lot of forums saying Royal Purple oil gets better fuel mileage. Does it really? Also does the price of the oil and OCI worth getting a few extra mpg?

Thanks


I have used RP for a LONG time and it is a very good product. The only way you will really see any MPG gains is if you swap everything over to RP( engine oil, trans fluid, diff fluid ). Do that and you could see a small MPG gain. I have done it and seen gains upwards of 2 MPG. You could probably see similar gains by swapping to other synthetics as well.

RP is great stuff so swap because you want a great product otherwise you will be disappointed. Swapping over JUST to RP oil will gain you little if any MPG.

 

[Roclbee]

I too have used RP in everything I own for a very long time. The best thing that I have seen was on my 2006 LJ Rubicon Jeep. From the factory it came with the chrysler synthetic in the auto transmission. At 3K I dumped all the oils in the jeep, tcase, trans, diffs and motor. I was amazed to see while crawling the transmission ran 20 degrees cooler over stock oil with the RP atf.
Originally Posted By: NHHEMI
Originally Posted By: mikeriley1358
Hi. I am new to these forums. I been reading them for a while and just now signed up.

I have a question about Royal Purple. I have a 2003 Ford Ranger 4.0. I have it programmed with a SuperChip set for Mileage XS Save mode. I am getting about 19 mpg combined.

I see a lot of forums saying Royal Purple oil gets better fuel mileage. Does it really? Also does the price of the oil and OCI worth getting a few extra mpg?

Thanks


I have used RP for a LONG time and it is a very good product. The only way you will really see any MPG gains is if you swap everything over to RP( engine oil, trans fluid, diff fluid ). Do that and you could see a small MPG gain. I have done it and seen gains upwards of 2 MPG. You could probably see similar gains by swapping to other synthetics as well.

RP is great stuff so swap because you want a great product otherwise you will be disappointed. Swapping over JUST to RP oil will gain you little if any MPG.

 

[fdcg27]

Buy and run an oil because you want to try it.
Don't buy an oil becuase you anticipate fuel savings that will offset the marginal cost of the oil.
If you carefully track fuel consumption with every tank, you can probably identify a real change in fuel economy over the length of an OCI.
I would bet a paycheck that the Forester is more economical using Synpower 5w30 than it was using GC, based upon the log I maintain for each of our cars.
This is a pretty safe bet, though, since GC has much higher HTHS than does Synpower 5w30.
Synpower is also an API starburst oil in the thirty grades, while GC most certainly is not.