robison
Silver Member
- Joined
- Apr 27, 2005
- Messages
- 124
- Location
- Western Massachusetts
- Tractor
- John Deere 4510 / John Deere GT235 / DR mower
Re: Can\'t Believe the Difference!
<font color="blue">I find it interesting that MAKERS or "long duration running engines" ( such as Cat and Cummins) tell owners to FORGET syn oils and use the recommended weight and spec oils they recommend and drain at the intervals they recommend and "all is well". Strange they can build and warranty engines for 450-500,000 miles and yet users of autos feel they have to swap out oil every 3K miles...just to get their engines to run 100,000 miles.
I concur. As i posted earlier.. the last oil sample we pulled was on an 80 mack tractor.. with 2+ million miles on it.. at 12000 miles. We were looking for wear metals... specifically.. but the shop dropped the bearings and plastigauged them.. slaped them right back in.. bearing were goo and within acceptable tolerance.
Background.. this truck hauled milk for about 14 years, then went to hauling heavy equipment for us. It's major breakdows include an injector pump, air compressor, and a rear/rear diffy. that it...
Oh yeah.. fina diesel rated sae 30w fleet oil... all it has ever seen with us...
Also.. our cat dealer tells us the same thing.. change the oil at specified intervals.. not extended changes..
Soundguy )</font>
Soundguy, with respect to my earlier post . . .
When you compare cars to heavy trucks you must consider that the typical heavy truck has 5 to 10 times the oil capacity of a car. So the oil does not get "used" as much. If you have 5 quarts in a car, and 50 in a truck, and the truck is run continuously so it does not see a lot of short haul deterioriation there is no surprise hearing the truck has a 30,000 mile service interval compared to 3,000 for the car.
Now, as to extended drain intervals . . . It is important to recognize that I am not advocating extended drain intervals for you or anyone else in my post. Rather, I am pointing out the environmental benefit of such intervals.
That enviromnental benefit is leading European govenments to mandate such intervals, hence the 10-15,000 mile invervals on current BMW and Mercedes cars. Many people here do not know that those type intervals are mandated in Europe for cars.
Responsible MB and BMW service managers do not advocate increasing the interval on these cars. Older models had 5,000 or 7,500 intervals and I do not advocate increasing them because in addition to the differernt oil requirements the engine technology on the new models is considerably different.
<font color="blue"> </font>
<font color="blue">I find it interesting that MAKERS or "long duration running engines" ( such as Cat and Cummins) tell owners to FORGET syn oils and use the recommended weight and spec oils they recommend and drain at the intervals they recommend and "all is well". Strange they can build and warranty engines for 450-500,000 miles and yet users of autos feel they have to swap out oil every 3K miles...just to get their engines to run 100,000 miles.
I concur. As i posted earlier.. the last oil sample we pulled was on an 80 mack tractor.. with 2+ million miles on it.. at 12000 miles. We were looking for wear metals... specifically.. but the shop dropped the bearings and plastigauged them.. slaped them right back in.. bearing were goo and within acceptable tolerance.
Background.. this truck hauled milk for about 14 years, then went to hauling heavy equipment for us. It's major breakdows include an injector pump, air compressor, and a rear/rear diffy. that it...
Oh yeah.. fina diesel rated sae 30w fleet oil... all it has ever seen with us...
Also.. our cat dealer tells us the same thing.. change the oil at specified intervals.. not extended changes..
Soundguy )</font>
Soundguy, with respect to my earlier post . . .
When you compare cars to heavy trucks you must consider that the typical heavy truck has 5 to 10 times the oil capacity of a car. So the oil does not get "used" as much. If you have 5 quarts in a car, and 50 in a truck, and the truck is run continuously so it does not see a lot of short haul deterioriation there is no surprise hearing the truck has a 30,000 mile service interval compared to 3,000 for the car.
Now, as to extended drain intervals . . . It is important to recognize that I am not advocating extended drain intervals for you or anyone else in my post. Rather, I am pointing out the environmental benefit of such intervals.
That enviromnental benefit is leading European govenments to mandate such intervals, hence the 10-15,000 mile invervals on current BMW and Mercedes cars. Many people here do not know that those type intervals are mandated in Europe for cars.
Responsible MB and BMW service managers do not advocate increasing the interval on these cars. Older models had 5,000 or 7,500 intervals and I do not advocate increasing them because in addition to the differernt oil requirements the engine technology on the new models is considerably different.
<font color="blue"> </font>