dshelley wrote: Take 2 identical diesel powered Dodge trucks, run them for years and hundreds of thousands of miles side by side. Use Amsoil in one and Rotella in the other. The only significant difference will be the amount of money spent on the synthetic oil.
You'll spend more on Dino doing the reg oil changes versus extended OCI's with the synthetic. One of the other forums I frequent someone was bragging how they change their oil every 3000 miles. Why? Because he knows he has clean oil all the time. That's funny, even at 25,000 miles on the same oil I still have clean oil that can stay in my truck even longer.
Some ppl can't let go of the past and jump on today's new technologies that far surpass the past.
dshelley, the above statement is not directed towards you. Just a generalized statement.
Using synthetics doesn't lengthen the change interval per the manufacturer. Important for us with a warranty I think. Really, the gain with synthetics is in very cold climes, according to Cummins.
2008 Dodge 3500 CTD LB SRW 4X4 6-Speed Auto
Prodigy P3, Blue Ox Sway Pro, 225 75R 15E Maxxis
2007 Komfort 212
I use Amsoil 15w/40 in my 05 psd. For the newer diesels with the new CJ-4 rating Amsoil recomends changing at the manufacturer intervals (SERVICE LIFE: AMSOIL Synthetic 5W-40 Premium Diesel Oil is recommended for use according to the longest service interval established by the engine, vehicle or equipment manufacturer. Drain intervals may be extended when monitored by oil analysis.). Given the fact that Amsoil recomends you drain at the service interval made by the manufacturer its probably more cost effective to buy Rotella, however if you want to extend you OCI I would highly recomend getting regular Oil Analysis done, and using Amsoil. Some people think the only bennefit of a full syn is in the "Frozen North", though this is an extreme bennefit, this is not the only one. In test after test full synthetics show their superiority over "dino" oils in shear stability, heat resistance, just to name a few. What this translates to is a more stable platform for an oils' additive package to survive when temps and stress goes up. Which is one reason why you can use extended OCI's when using some full Syns. When I am towing my 10,000lb 5th wheel I consider this to be extreme, or more accurately severe service. Having said all of this some people will always be conventional buyers and some will be synthetic buyers, in my case I will always use synthetic in my diesel, if I've just spent 50,000 dllrs on a truck whats an extra 50 dllrs every 7500 miles or so? You can check Amsoil DEO 5w/40 here:https://www.amsoil.com/storefront/SearchResult.aspx?CategoryID=368. I would also recomend you go to www.bobistheoilguy.com, and ask around there. Good luck
Ok. I went to Cummins and read the info on Valvoline Premium Blue. Probably what I will choose. One more question, conventional (premium blue) or synthetic (premium blue extreme)? You opinion?
dodgeboy wrote: Ok. I went to Cummins and read the info on Valvoline Premium Blue. Probably what I will choose. One more question, conventional (premium blue) or synthetic (premium blue extreme)? You opinion?
Doesn't Cummins recommend putting X amount of miles on before going to synthetic? I don't remember how many. Anyway, I plan to use what Cummins/Dodge say to use, which is conventional I believe.
dshelley wrote: Take 2 identical diesel powered Dodge trucks, run them for years and hundreds of thousands of miles side by side. Use Amsoil in one and Rotella in the other. The only significant difference will be the amount of money spent on the synthetic oil.
You'll spend more on Dino doing the reg oil changes versus extended OCI's with the synthetic. One of the other forums I frequent someone was bragging how they change their oil every 3000 miles. Why? Because he knows he has clean oil all the time. That's funny, even at 25,000 miles on the same oil I still have clean oil that can stay in my truck even longer.
Some ppl can't let go of the past and jump on today's new technologies that far surpass the past.
dshelley, the above statement is not directed towards you. Just a generalized statement.
NavyDood
I have to agree with you concerning that statement. These vehicles we are all writing about are proof of today's technologies being being far superior. I do use synthetic oil in my cars, a BMW Z4 (BMW says use it) and a Hyundai Sonata (buying it already for the other car). I don't put it in the truck simply because the cost would over ride the benefit. That thing has an oil tank the size of Gary Coleman's swimming pool. There is only 1 reason to use a superior oil, cost savings. Less fuel burn? longer lasting? Both equate to nothing more than cost savings. My engine manufacturer claims I can change the "dino" oil at 15000 miles. 7500 if I'm stressing it. I wouldn't do it at longer intervals, no matter what the marketing folks of synthetic oils want to claim. No one has (of yet) convinced me that using oil that cost's 3 or 4 times as much will in the end of my truck's ownership save me any money. I've read and have heard the theories of how much cleaner the engine will be. If I keep this truck for half million miles, will that "clean engine" save me any money? I don't believe it will. Actually, I'm quite convinced it won't.
* This post was
edited 04/29/08 03:01pm by dshelley *
dodgeboy wrote: Ok. I went to Cummins and read the info on Valvoline Premium Blue. Probably what I will choose. One more question, conventional (premium blue) or synthetic (premium blue extreme)? You opinion?
I used the premium blue in my 03, and now in my 07.5, I will stick with it at less than 2 bucks a quart till I get a couple hundred thousand miles on it, then change to the extreme when it is broken in.
In case you can't get on (it is a partial member only site) here is an excerpt.
"Finally, don't fall for the statement that synthetics can be cost-justified because they can be used for twice the normal oil change interval. This is simply no longer true. The additive package, particularly detergent, dispersant, and antioxident levels, is the primary determinate of oil change interval. Also consider that extending oil change intervals is a gamble. You can monitor used oil data to dtermine if sufficient additive is present to continue, but one of the main reasons to change oil is to get contaminants, (soot, sludge, etc.) out of your engine. Some contaminates, such as glycol, can cause a lot of damage in a short time.
There is more that is 6.7 specific, but cut a nd paste won't work and it is too much to type.
In case you can't get on (it is a partial member only site) here is an excerpt.
"Finally, don't fall for the statement that synthetics can be cost-justified because they can be used for twice the normal oil change interval. This is simply no longer true. The additive package, particularly detergent, dispersant, and antioxident levels, is the primary determinate of oil change interval. Also consider that extending oil change intervals is a gamble. You can monitor used oil data to dtermine if sufficient additive is present to continue, but one of the main reasons to change oil is to get contaminants, (soot, sludge, etc.) out of your engine. Some contaminates, such as glycol, can cause a lot of damage in a short time.
There is more that is 6.7 specific, but cut a nd paste won't work and it is too much to type.
TDR is prolly the best Dodge forum out here in cyber space. Just like any forum, there are tons of ppl that praise extended oil change intervals and those that don't. That article is pretty good. Lubrizol is one of the companies that Amsoil gets their additives from. Typically, TDR articles are wrtiiten by its fanbase of ppl or forum sponsors for their quarterly newsletter/mag. Heck, I even had an article published on gauge installs two years ago.
* This post was
edited 04/30/08 11:05am by NavyDood *
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