dino oil vs synthetic mpg

Cummins12V98 wrote:
I run the 15-40 AMZ/OIL Diesel Signature Series in my Cummins. Oil is still in great shape at 15k with FleetGuard filter. This sample was at 45K on the clock.

I have a Cummins in my Freightliner and they are very specific that I am not to use synthetic oil, dino oil only. I even called and had that confirmed but did not get a reason.

"QUOTE"

"That won't get you a dime extra from any dealers trade in appraiser, or the majority of private buyers either. Personally I would expect to see detailed service records for things like fluid changes and other maintenance if I was buying used, but why would I pay more because the vehicle was maintained per the manufacturers recommendations?

That oil analysis is fine if you like spending $28 bucks. There are many things that can go mechanically wrong with an engine in a major and expensive way, and an oil analysis report is not going to give any sort of warning for the majority of them. "




If I were selling private party with MY detailed maintenance records and my EXCELLENT oil reports I WILL get top dollar with ease. BTW you can ONLY go 15K on an oil change if the computer says you can. All that data is stored. I am excessive with all my maintenance, it has served me well.

BTW I did get 3K more on trade with AutoNation on my 11 Dually than what Dave Smith offered with both asking same $ for my current 15. I did show the salesman detailed maintenance records I kept in my owners manual along with Blackstone reports. He was VERY eager to get my truck I added 6K more miles than I promised from order time to trade on new truck. He only docked $1,000.

Driving my truck the way I do allows 15K oil changes (more if I wanted to risk warranty coverage), using the AMZ/OIL Signature Series and FleetGuard strataPore I pay $127 per change. Most people change at 1/2 that mileage or less. So for the time spent and the reports I get "I" am VERY happy.

I use them for the cold weather startups, and the fact that the synthetics take higher heat better when towing in hot weather.

ktmrfs wrote:

FishOnOne wrote:

ktmrfs wrote:
mfg are slowly switching to synthetics to get the best mileage possible for EPA testing, along with the 0W oils. Now, the EPA test is a short time from a cold start. and they are worried about 0.1mpg differences.

So.... do synthetics improve mileage, yes, but not likely enough that you can tell, and the biggest effect is likely in short trips in cold climates. long trips, less so.

synthetic advantage is more in engine protection and cold temp starting not mpg improvements. and given todays engine longevity, not sure there is a payback. your choice.

Back in the 1960's living in the midwest and not having access to a garage or a way to plug in the block heater when in college, I used conoco DN600 polar start oil in the winter. not sure if it was a synthetic or not, but at -40F my car, and others that used it would crank much faster and usually start better than others running 10W-30 at the same temps.

Manufacturers are switching to lower viscosity to improve fuel mileage.

agreed, that is one thing I pointed out. but they are looking for 0.1mpg improvements. how many of us could even measure that level of change? or have the cost/benefit pay off.

But when you can achieve a .1mpg increase across your entire population of vehicles you sell for the year that's pretty significant or when you own a fleet of trucks that's constantly being utilized it adds up just by simply decreasing the oil viscosity. I shouldn't say "simply" because the engines have to be machined to even tighter tolerances to be really compatible with thinner oils.

For you and myself it's insignificant.

FishOnOne wrote:

ktmrfs wrote:
mfg are slowly switching to synthetics to get the best mileage possible for EPA testing, along with the 0W oils. Now, the EPA test is a short time from a cold start. and they are worried about 0.1mpg differences.

So.... do synthetics improve mileage, yes, but not likely enough that you can tell, and the biggest effect is likely in short trips in cold climates. long trips, less so.

synthetic advantage is more in engine protection and cold temp starting not mpg improvements. and given todays engine longevity, not sure there is a payback. your choice.

Back in the 1960's living in the midwest and not having access to a garage or a way to plug in the block heater when in college, I used conoco DN600 polar start oil in the winter. not sure if it was a synthetic or not, but at -40F my car, and others that used it would crank much faster and usually start better than others running 10W-30 at the same temps.

Manufacturers are switching to lower viscosity to improve fuel mileage.

agreed, that is one thing I pointed out. but they are looking for 0.1mpg improvements. how many of us could even measure that level of change? or have the cost/benefit pay off.

I thought religious posts were not allowed? :B

In theory I like the idea of buying from a guy who uses synthetic and oil analysis because he's totally anal about maintenance.

But in the final outcome I'm that guy myself... so I buy new. Then I'm the one to break it in and maintain it to MY satisfaction. I'm not gonna tell you when I do the first oil changes. ;)

larry barnhart wrote:
I don't smoke or drink or chase the ladies so I have tons of money for oil.

You should reconsider. Not only is it a hell of a lot of fun, but you often get more out of it than you do from buying oil.:D

Cummins12V98 wrote:

Some will say why do a sample every oil change like I have. When I go to sell this these reports will net me a higher price as they can see for a FACT the condition of the engine.

That won't get you a dime extra from any dealers trade in appraiser, or the majority of private buyers either. Personally I would expect to see detailed service records for things like fluid changes and other maintenance if I was buying used, but why would I pay more because the vehicle was maintained per the manufacturers recommendations?

That oil analysis is fine if you like spending $28 bucks. There are many things that can go mechanically wrong with an engine in a major and expensive way, and an oil analysis report is not going to give any sort of warning for the majority of them.

To me the point is what we are doing is working for us. I never had any gas engine go bad using good oils. I don't smoke or drink or chase the ladies so I have tons of money for oil. Kinda making a joke. I usually change once a year at under 7000 miles. Overkill.

chevman

Cummins12V98 wrote:
I run the 15-40 AMZ/OIL Diesel Signature Series in my Cummins. Oil is still in great shape at 15k with FleetGuard filter. This sample was at 45K on the clock.


Some will say why do a sample every oil change like I have. When I go to sell this these reports will net me a higher price as they can see for a FACT the condition of the engine. The "Universal Average" numbers are averages of 6-7K oil changes. My TBN is strong and the Viscosities are strong along with flash points, these numbers are compared to the oils spec. You can see the previous two samples and how they have improved as the engine breaks in.

So where in this information does it provide which oil provides better mpg like the OP is asking for.

This is more like scope creep and all you proven is you follow the mfg oil change interval and will not command more money at trade in than the next guy

our 05 chev had 112020 miles on the Rotella synthetic and tested using blackstone. Result was go 2K more miles. Not going to happen as I had wife health issues and let the duramax go for that many miles to happen. Same report as Cummins shows. 97K miles now.

chevman