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ULSD and HPFP's #5192458 08/20/19 08:54 PM
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sloinker Offline OP
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The ULSD is capped at 15ppm for on road vehicles. Do the latest HPFP's run ok on this without added lubricity added at the terminal/truck/station? If you got a batch of ULSD fuel that was without additives would you harm your older or newer HPFP?


'16 Tiguan TSI Ravenol VST 5W40
'15 VW Golf TDI Ravenol VMP 5W30
'15 VW Golf Sportwagen TDI VMP 5W30
'14 Dodge Grand Caravan 3.6 Red Line Blue Label 5W20
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Re: ULSD and HPFP's [Re: sloinker] #5192645 08/21/19 06:18 AM
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BMWTurboDzl Offline
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Un-additized ULSD will cause excessive wear on the fuel system and could also have a low cetane rating which results in poor starting performance.


“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: ULSD and HPFP's [Re: sloinker] #5192670 08/21/19 07:05 AM
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Olas Offline
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TCW3 gives all the lubricity you need, and a splash of 2ehn gives better starting&performnce


Cable ties should hold it
Re: ULSD and HPFP's [Re: sloinker] #5192780 08/21/19 09:42 AM
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kschachn Offline
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I always find these threads interesting. So do the majority of all diesel owners use an additive, or is there a large percentage of failures on fuel pumps? I don't imagine most owners use an additive, do they? Don't they just fuel and go like everyone else? If so, how long can you go before there is a failure of pump?

Seems so odd that a change in fuel composition was made that essentially damages a significant percentage of the trucks in existence.


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Re: ULSD and HPFP's [Re: kschachn] #5192870 08/21/19 11:52 AM
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BMWTurboDzl Offline
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Originally Posted by kschachn
I always find these threads interesting. So do the majority of all diesel owners use an additive, or is there a large percentage of failures on fuel pumps? I don't imagine most owners use an additive, do they? Don't they just fuel and go like everyone else? If so, how long can you go before there is a failure of pump?

Seems so odd that a change in fuel composition was made that essentially damages a significant percentage of the trucks in existence.


IMO there is an opinion that fuel systems used in light passenger cars/trucks are less robust (Ex, VW TDI's had a rash of HPFP failures back in 2011 or so) AND/OR European diesels almost always call for Cetane of 51 or more. IIRC US diesel is spec'd at a min of 40 and real-world testing usually came in around 45-48.

Since diesel pumps in my area never indicated a cetane of 51 or more let alone bio-diesel concentration, I always used an additive which contained a cetane booster (2EHN) when I had my 335d for this very reason. I felt it would prolong the life of my DPF and I would realize slightly better experience via more complete combustion which would reduce EGR usage.


Last edited by BMWTurboDzl; 08/21/19 11:57 AM.

“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

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Re: ULSD and HPFP's [Re: sloinker] #5192915 08/21/19 12:40 PM
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sloinker Offline OP
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I'm just wondering if the latest pumps are robust enough to withstand the lowest sulfur fuels in case they forgot to add the lubricity/cetane modifiers along the way. You are seeing failures of older pumps before their usual service life. VW's and their Bosch pumps seem to be the most issues although there are a goodly amount of Ford and GM horror stories too. Are the newest pumps immune?


'16 Tiguan TSI Ravenol VST 5W40
'15 VW Golf TDI Ravenol VMP 5W30
'15 VW Golf Sportwagen TDI VMP 5W30
'14 Dodge Grand Caravan 3.6 Red Line Blue Label 5W20
'64 Plymouth Fury440 Red Line Blue Label 10W40
Re: ULSD and HPFP's [Re: sloinker] #5192999 08/21/19 02:12 PM
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BeerCan Offline
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So I fell prey to the Ford HPFP failure thread on another forum. So I add a small dose of Alliant ultraguard at every fill. I also try and use at least B5 if I can find it. Bio diesel is a good lubricant. I have about 200K on different Ford 6.7's and no issues. I think the issue is a little overblown but for sure the Bosch CP4 had some teething issues. I feel they got it sorted on the CP 4.2

Last edited by BeerCan; 08/21/19 02:12 PM.

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