I am looking at a 1996 Turbo Diesel and wanted to know about the new low sulphur diesel fuels and if they are ok to run on an older engine like this.

If this is a repost please point me to the right post

Thanks

 

I don't have a lot of experience with turbo diesels in Hummers.... but being a diesel mechanic I do have opinions.

Yes it is an issue. Perhaps not a major issue in the hummer line but all major diesel manufacturs have had to make improvements for the ULSD and also the newest EPA regs. The major issue is sulpher helps lube the o-rings. You can add fuel additives or do like Europe hasand change the seals to Viton or simialr plastics.. You also have to check for fuel leaks and monitor the oil. Fuel filters are said to have to be changed more frequently and also the motor oil.

Like I said I don't have all the answers for your exact question... but damage can occur.

 

Muddy, can you explain how sulpher lubricates the o-rings? I dont know anything about diesels and I'm just wonering.

 

poor choice of words.... thanks for asking.... my bad...

Sulphur itself,is not a lubricant. It's the process of removing the sulphur that also removes some of the fuel's lubricity. The only way to get that back is with additives....[/align][/align]This debate has actually been going on for a couple years... with everyone having different opinions.[/align]

 

Sorry, i didnt mean to offend you just that i never knew that sulpher(or process of removing it) could be used a lubricant. I just wanted to know

 

No... no offense at all. I posted incorrect info.

 

Good info. Nice thread. Way to go Muddydawg.

 

I looked into this a few other places and the result is the people that are having issues with the ULSD are seeing puddles under the lift pump.... and in increase in oil level... which equals diluted oil... which equals failure in the bearings.

 

From a thread on another forum they did a test and best way to add lubrication back into diesel is via biodiesel and just as little as 2% is enough to make up for the slack from the new ULSD fuel.
I happen to run B20 or 20% biodiesel during the warm months with no current mods.

 

Could you modify the H1 to run on B100 because a guy i saw at the shop had a diesel F-450 running on B100