0W-30 Mobil 1 superior gas savings???

[Durango]

Guys/Gals,

I already check and fill my tires to proper pressure recommended of the door sticker now every month. As it is now it runs rock now so adding more isn't required. I also try to keep the air filter clean and keep a light gas pedal pressure foot.

My next OCI I will try some 5W-20 and see what happens.

Durango

 

[440Magnum]

Originally Posted By: Durango
Guys,

OK then would I not increase mileage by going to a 5W-20 synthetic like M1 instead of using a 5W-30??? They also market a 5W-20 synthetic too.

Currently I use all the tricks I know of to save a little gas and improve mileage like checking my tires every month, make sure the air filter is clean and of course use M1 synthetic BUT in the specified 5W-30 weight. The BEST MPG I've gotten so far was 22.2 MPG on the highway.

Durango


I think Mobil does more to make the "green cap" 0w30 an energy saving oil than just the viscosity. I suspect a good dose of friction modifiers is in there also. If there's a similar friction-modified 0w or 5w20 then it might give slightly better efficiency than 0w30 AFE, but I don't think just any old 0w20 will be any more efficient than green cap 0w30. After all, its repeatedly said on here that Xw20 and Xw30 oils are usually very similar in actual viscosity, with the 20s being on the thick end of the 20 range.

By the way- my Dad would *love* to ever get 22.2 out of his Durango. Its a 5.9, and typically never exceeds 18-19. The 4.7 is buying you a *lot* of efficiency compared to the old 5.9, and probably even the old 5.2.

 

[ET16]

Originally Posted By: mozart
Originally Posted By: wannafbody
If you want to icnrease mileage inflate your tires to the maximum pressure as stated on the sidewall.


Don't do this. The max pressure is exactly that, the maximum the tires can handle. When the tires heat up the pressure increases. You could potentially get the pressures high enough to cause a dangerous situation.

The door jamb recommended pressure is the recommended number. You should be ok going between this and the tire's max, but I wouldn't get too close to the max. Some may see this as overly cautious, but better safe than sorry


I agree with Mozart here.

 

[ET16]

I'm going to qualify my previous post, based on the many good suggestion here on tire pressure. I agree that one can approach the max sidewall pressure, but it depends on what that pressure is and what the recommended pressure is. Recommended, for example, for my Mazda MPV is 35 psi, and the sidewall max of my tires is 51 psi. Going to 51 psi is really too much for the weight of this car. I run 45 psi, and that's about all that I think that I really should. Above that the car starts to bounce around. If my tires were speced for a max pressure of 44 psi, for this car I'd probably run 43.

 

[Durango]

Originally Posted By: 440Magnum
Originally Posted By: Durango
Guys,

OK then would I not increase mileage by going to a 5W-20 synthetic like M1 instead of using a 5W-30??? They also market a 5W-20 synthetic too.

Currently I use all the tricks I know of to save a little gas and improve mileage like checking my tires every month, make sure the air filter is clean and of course use M1 synthetic BUT in the specified 5W-30 weight. The BEST MPG I've gotten so far was 22.2 MPG on the highway.

Durango


I think Mobil does more to make the "green cap" 0w30 an energy saving oil than just the viscosity. I suspect a good dose of friction modifiers is in there also. If there's a similar friction-modified 0w or 5w20 then it might give slightly better efficiency than 0w30 AFE, but I don't think just any old 0w20 will be any more efficient than green cap 0w30. After all, its repeatedly said on here that Xw20 and Xw30 oils are usually very similar in actual viscosity, with the 20s being on the thick end of the 20 range.

By the way- my Dad would *love* to ever get 22.2 out of his Durango. Its a 5.9, and typically never exceeds 18-19. The 4.7 is buying you a *lot* of efficiency compared to the old 5.9, and probably even the old 5.2.



440Magnum,

The 5.9 liter V-8 is a gas hog for sure as told by many people from the Dakota Durango forum. Still though your dad can achieve good results if he works at it but in your region it might not be possible as I have allot of long freeway stretches to use and test MPG from my 4.7 V-8. I only achieved this when the weather permits so it must pretty perfect for me to get what I did.

Durango

 

[Loobed]

Originally Posted By: Durango
Hello to all,

Is it OK to use in any V-8 engine to gain more miles cuz M1 says it won't alter the factory warranty.

Opinions please cuz I want to try this oil weight in my next OCI.

Durango



You won't get any noticeable increase in millage if you use M1 Green Cap over standard Dino oil if it is the same weight.

You will get better mileage if you drive in a manner that will p-off an old lady.

 

[440Magnum]

Originally Posted By: Durango

440Magnum,

The 5.9 liter V-8 is a gas hog for sure as told by many people from the Dakota Durango forum.


Yes, its a long-stroke engine with a fairly simplistic cylinder head design (longer stroke than the old 383 and 400 big-block Chryslers). But it will run FOREVER... ;-)

Originally Posted By: Durango
Still though your dad can achieve good results if he works at it


Mom and Dad are in their 80s and just don't drive enough to make a few mpg matter anymore. Dad did buy a 4.7 Ram 1500 back last December to replace his 250,000+ mile 92 Dakota, and he loves it. Its the new 310-HP rated 4.7 backed by the 545RFE transmission, and he's already matched the best mileage of their 01 Durango with the 5.9 without even trying or getting it broken in completely.

 

[CobraJet]

My escort gained an average of an extra 1.6mpg after I added M1 0w20, but thats compared to the Motorcraft synthBlend 5w30 that it ran before. It's not much, but its an extra ~20.5miles out of the tank.

 

[demarpaint]

I would be pleased getting any extra 20.5 miles/tank of gas.