Doing a little reading on an RV site and found a post about lowering the sulfur content of diesel fuel:

(a) Regulatory Standard.

(1) 500 parts per million sulfur standard. On or after October 1, 1993, no person shall sell, offer for sale, or supply any vehicular diesel fuel which has a sulfur content exceeding 500 parts per million by weight. Once the 15 parts per million sulfur content standard becomes applicable to an activity in accordance with the phase-in schedule in subsection (a)(3), the 500 parts per million sulfur content standard shall no longer apply to that activity.

(2) 15 parts per million sulfur standard. Starting June 2006 in accordance with the phase-in schedule in subsection (a)(3), no person shall sell, offer for sale, supply or offer for supply any vehicular diesel fuel having a sulfur content exceeding 15 parts per million by weight.


How does this affect the LB7?

I'm not a mechanic or a chemist. My reading indicates the process of lowering/removal of S from diesel also lowers lubricity of the fuel. Its the process...not the actual removal of S. We're running low S here in Ontario. I have chosen to add Stanadyne Performance to every tank, to improve lubricity, its also a demulsifier, anti gel and has some cetane boost. 55k kms (33k miles) and so far so good. Adding CAT Pre OEM fuel filter under the hood this week....finally.
Richard

All I have access to is low sulphur diesel. I add a bottle of Kleen-Flo every so often and all seems good.

all on road diesel fuel is low sulfur due to emissiosn regulations. yes sulfur does help lubricate the injection pump and injections to a point but it can also be extremely damaging. its called cold end corrision in which any built up sulfur usually in the turbo will mix with condensation and make sulfuric acid which will eat away everything. its much easier to run a good fuel additive then to deal with lots of sulfur.

He is talking about Ultra Low Sulfer Diesel, it has been Low Sulfer Diesel since 93. Most refinery's are just now in the process of getting thier units ready to run ULSD. We did a few runs on ours last fall. The lubricity in ULSD is horrible, very hard on any diesel engine. I'm sure by the time it comes to market, the refinerys will be required to add a lubricity additive before it is sold. I make sure I run a good additive with lubricity agents.