Also remember that when you use Amsoil, you are paying for oil that has amazing wear capabilities....So do the math is your motor worth putting an extra 18 bucks an oil change in? Thats two large pizzas at the most haha

 

Spooler, just use a good quality oil and don't sweat it. That engine will outlast you. Add a bypass filter if you want, but it really isn't necessary.

My vote is save your money and buy pizza. It's money better spent.

 

After 17 years of working on Brown delivery trucks that are fed plain label high grade oil under what some would call "hard " driving down gravel and rock roads with extended drain intervals, I do not worry about some of these issues as much as some. I have seen OTR engines go way over 1 million miles, I have seen 300 6 cyl fords go over 600,000 miles and I have seen many a 6 bt go 3-400,000 miles without what I would call an oil related failure. These engines are started and shut off 100-300 times a day without hurting turbos without letting the turbo cool down, let alone slow down. The typical day has them go from cold to pedal to the metal within a couple of minutes and they don't have oil related failure. I do run the premium blue synthetic and I may put some sort of bypass on it some day, but it is not because I think it will make or break my truck. These engines are designed and expected to give 3-400K miles as equipped in medium duty trucks, so most peoples Dodges are not really making them sweat much. I am however preparing to do a major upgrade in the fuel filtration department.

 

i agree, i think it’s worth it. i don't have the bypass kit yet but i will soon. but i've got their oil and i was able to go over 20k+ miles on that oil and a using fleetguard filters w/ regular samples taken and set for analysis.

 

If you believe the hype.... Blackstone says all the oil I use is good oil, and I could run all of it longer. So if I'm throwing good oil away now, why throw expensive good oil away?

 

I agree

Engine oil has evolved so much that unless you need to cold start capabilities or run in an incredibly hot climate, it really isn't even necessary to run synthetic oil. Good old dino oil works just fine.

You don't need synthetic oil to run extended drain intervals either.

If it weren't so darn cold here in the winter, my truck would have 15/40 dino oil in it.

Amsoil may have been a leader back in 1973, but it is the dinosaur these days. It is expensive and overrated.

 

I still have 15-40 dino oil in my truck but it's only been down to -15F so far.

Maybe I should switch for winter. I'm due for a change anyway.....

 

I'm not sure yet, but when I change my oil. I'm gonna keep an eye on it to see if the amount in the oil pan grows as time goes on. If it does grow, I'm thinking injector cups seals. Has anyone had experience with this?

 

Question for the long term Amsoil gang?

One of the reasons to change oil frequently is to remove the acidic by products that will accumulate from the many combustion firings and normal cyclings of an internal combustion engine. What sort of elimination of these by products are you assured of removing by leaving your Amsoil in your crankcase for such an extended period of time. Yes you can filter out particulate matters down to the .02 mic and lower I assume but you can't filter out chemical "trash" in the oil without changing it ?

Angelo

 

Every oil analysis I have seen posted on here this is not a big issue for extended drain intervals. This is for regular dino oil and synthetics alike.

 

You don't have the year posted in your signature. Very hard to help without that information. The newer emissions engines can make oil due to regins. Dosen't matter if it is a Ford, Dodge, Chevy, Cat, etc. This has been noted by Amsoil and they have revised there drain intervals due to this issue.

 

The oil starts out with a higher TBN than regular oil. That way it can neutralize more acidic bp from combustion.

AMSOIL 15W-40 shows 12.1 TBN for new oil
https://www.amsoil.com/storefront/ame.aspx

Delo 400, 15w40 msds shows 9.6
https://cglapps.chevron.com/msdspds/...&docFormat=PDF

Rotella T msds shows 11.5
http://www.shellusserver.com/product...aTCI-4CI-4.pdf

 

I guess this accents the need for consistant and mid term Oil analysis as well. You need to know what the Tbn and other wear points are so that you have a "base" to note abnormally high or low particulates in the oils as well. Each drive train and driver as well as conditions vary and "normal" for me and my rig might not be normal for everyone elses...no way to know w/o UOA.
thanks guys.
A

 

I don't think anybody recommends running extended drain intervals without analysis. Also, to keep the TBN up, it is recommended to change a filter every so often and add that much new oil to replenish the additives.