pwr2tow said:By the way, the duty cycle for the cummins in the dodge application your speaking of is not because of oil or fuel, it's because of higher hp ratings in the new trucks compared to the older trucks. The older trucks came out with a 5. 9 12 valve at 160 Hp, The new trucks with the 5. 9 24 valve are at 325 Hp. Any time you increase stress on a subject it decreases duty life expectancy.
Crunch said:Unfortunately, rbattelle just bought of the last of the good stuff in the entire country, and the rest of us are out in the cold.
Crunch said:I would counter that all those aspects work together as a system, and the duty cycle is based on the proper functioning of the system as a whole. HP is one aspect. But regardless of HP, substandard fluids, whether they be engine oil, fuel or coolant will decrease the life of an engine. If the new fuels and oils are manufactured in such a way that they have less lubricity, detergent or whatever they are substandard when compared to their predecessors. Unfortunately, rbattelle just bought of the last of the good stuff in the entire country, and the rest of us are out in the cold.
rbattelle said:The reduction of zinc in the formulation for CJ-4 makes me like Valvoline Premium Blue that much more - it has high levels of molybdenum disulfide, which (as I understand it) has exceptionally high lubricity.
Ryan
pwr2tow said:With these people in mind do you think fluid manufacturers are going to release products that will damage our vehicles and thus loose the publics business and go bankrupt. I highly doubt it.
pwr2tow said:The duty cycle of these engines as posted was made long before ULSD and CJ-4 oil was even mandated.
I agree that substandard fluids will contribute to less engine life. The problem is they have to be proven they are substandard for a given (MODEL YEAR) engine.
pwr2tow said:Keep in mind the majority of people don't even know about product components and just buy whats on the shelf. Manufacturers have to compensate for these people also. With these people in mind do you think fluid manufacturers are going to release products that will damage our vehicles and thus loose the publics business and go bankrupt. I highly doubt it.
Crunch said:Between the new oil formulas and the ULSD fuels we're really getting jacked around here. I've noticed a 1. 5MPG drop in my fuel economy when driving around town. On the highway it's about a . 25MPG drop. No telling how the new oil is going to affect performance and fuel economy. At least it looks like the CI-4 oils will be around at least till 2009. There's nothing we can do about the ULSD except start using fuel additives. Does anyone know how the fuel additives rate for increasing lubricity?
jimnance said:I know someone that noticed a drop in mileage after using ULSD. So, inquiring minds wanted to know if it was the fuel. They had some high sulfur off road fuel left over from the season and ran it. Mileage perked up about 1. 5 MPG. Maybe they ULSD was winter forumla and that was the difference. Hard to say.