eze2bme
Well-known member
- Joined
- Apr 12, 2005
- Messages
- 880
- Hatteras Model
- 43' DOUBLE CABIN (1970 - 1984)
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A friend of mine who owns a trucking company (and a 67CPMY with 12V71T's) asked his shop mechanic about this issue and here was his reply:
"This was a problem back in 1993 when we when to the LSD or >500 ppm of sulfur fuel. The engine companies changed the o-ring rubber material to correct the problem of the o-rings coming apart. Since that time we have not had that problem. As for the lower lubricity question, that was a great concern until we started running it in October of 2006. The question was are we going to have injector problems due to lower lubricity of the diesel. This should a two parts to this question. First will it effect both the older lower pressure injectors as you have or just the newer very high pressure injectors of the 2004 and later engines? The second part is what can be done about it if anything is required?
What we have found with our truck engines is that the older engines are doing just fine with the ULSD and did not have an increase number of injector problems. The newer engines have had problems with the injectors before the ULSD was put out to the field and the problems have not slowed down. While I cannot say that there will not be a problem I would not say that the ULSD is going to hurt or help your injectors. It will increase your fuel usage and cost to operate. Adding a lubricity modifier will not hurt and it may help but we have not had to use any in our truck engines."
His final suggestion was to add Marvel Mystery Oil to each tank to assist with lubing the parts. Any thoughts from you guys on this and how much would you add??
By the way ... I've searched around for the best prices on Diesel Kleen + Cetane Boost and found it at Tractor Supply @ $14 per gallon.
A friend of mine who owns a trucking company (and a 67CPMY with 12V71T's) asked his shop mechanic about this issue and here was his reply:
"This was a problem back in 1993 when we when to the LSD or >500 ppm of sulfur fuel. The engine companies changed the o-ring rubber material to correct the problem of the o-rings coming apart. Since that time we have not had that problem. As for the lower lubricity question, that was a great concern until we started running it in October of 2006. The question was are we going to have injector problems due to lower lubricity of the diesel. This should a two parts to this question. First will it effect both the older lower pressure injectors as you have or just the newer very high pressure injectors of the 2004 and later engines? The second part is what can be done about it if anything is required?
What we have found with our truck engines is that the older engines are doing just fine with the ULSD and did not have an increase number of injector problems. The newer engines have had problems with the injectors before the ULSD was put out to the field and the problems have not slowed down. While I cannot say that there will not be a problem I would not say that the ULSD is going to hurt or help your injectors. It will increase your fuel usage and cost to operate. Adding a lubricity modifier will not hurt and it may help but we have not had to use any in our truck engines."
His final suggestion was to add Marvel Mystery Oil to each tank to assist with lubing the parts. Any thoughts from you guys on this and how much would you add??
By the way ... I've searched around for the best prices on Diesel Kleen + Cetane Boost and found it at Tractor Supply @ $14 per gallon.
