If you believe the problem with the HPFP is lubricity, using fuel that has a 460 micron wear scar or less should give a target life in excess of 200k miles. Drivibiwire has stated:
If the wear scar of the fuel used was around 400 microns, then maybe the HPFP should be replaced during the second (or third) timing belt maintenance at 240k (360k) miles.
Do we have specific examples from members on here? I had not seen any failures in Bio-mandate states or from people who had been consistently adding a good quality lubricity agent.
Hmmm...not too sure about that. Every case I've seen in this forum has stated "additives: No"
Sounds good, but not possible. The CP4.1 pump or any common rail pump these days have such tight tolerances that clean filtered diesel fuel is the only acceptable lubricant to do the job. Engine oil is too dirty to provide proper lubrication in a common rail system so the quality and lubricity of the diesel fuel is the only option or variable to ensuring trouble-free operation.
I'm willing to bet other manufacturers are seeing similar failure rates. The TDI is used in primarily consumer vehicles as compared to pickups that are mostly business owned and considered commercial in a lot of areas. Private consumers are more vocal when dealing with product issues like this and the government is usually more inclined to get involved. Vehicles registered in company names are commercial and are not held to the same lemon laws in most states as consumer vehicles; in fact most states do not have lemon laws for commercial vehicles.
I havn't had a failure, but I have used 4 oz of PS and B2 - B5 for every fill up since I drove it off the lot. I found metal flakes in my fuel filter when I decided to change it early at 8.5K miles. I'm hoping it is from break-in of the car ...
Are the DELPHI pumps using oil to lubricate the bottom half of the pump? This is common in several different pump designs; the roller on the lifter and contact area of this to the camshaft are normally oil lubricated. The High pressure portion is usually always fuel lubricated.
There is a co-op in Fort Collins, CO that serves up Cenex Roadmaster B2. It's just off I-25 and exit 269. Take the exit and head west, take your first right, which will be the frontage road heading back north. Its about a mile up the road on your left.
If you like the car just as much regardless if it's a 2.5 or a TDI then I'd say lean towards the 2.5. If you have reasons you prefer the TDI over the 2.5 then you'll need to way your options.
Read everything you can and then decide. No one can do that for you.
You've gotta do it yourself!
If you use a good additive just as many of us do, I can almost
quarantee to you that you will not have any problems.
What $10 large repair bill?
Why are you waiting? 'You have nothing to fear but fear itself'!
Tomorrow will be our TDIs one-year-in-service anniversary. The odometer will read almost 24.5 K miles.
No problems, none!
Having owned 18 diesel powered vehicles beginning in 1966, this JSW is the best of all of them.
That total includes ten (10) Mercedez Benzs, all diesels, from our
1961 190D/b through the last one, a 1999 E-300 Turbodiesel.
You are the one that must decide. No one can do that for you!
Good luck. I hope that you will love your new TDI as we love ours!
D
Couldn't agree more. It's bad enough it's significantly more than gasoline. I'd understand if VW required it from square one and indicated it in the owners manual, but that is not the case.
No one is calling anyone anything! I agree, you (we) should not have to add anything!
But many choose to do so. It is cheap inexpensive insurance IMHO.
How much extra in cents per mile does using any additive cost?
All I am saying is an ounce of prevention is worth a pound of cure.
Of course, nobody should have to add anything to help our HPFPs live longer!
I spend less than $1.50 per tank to help with the lubricity to perhaps insure that
my HPFP will live for a longer time, It's cheap insurance don't you think?
What I use is supposed to raise the cetane level also.
Many use biodiesel which now costs, in some cases, more to use than
my choice of Opti-Lube XPD, depending on how much bio they add.
In some areas, bio is already in the D2 at the stations already by law.
D
I would think that most TDI owners don't bother with any additives, they just buy the car, drive it, and fuel it when necessary. TDIClub members are much more involved in the ownership experience than the average TDI owner.
Does the Ostrich bury its head in the sand and 'think' that no one can see it?
Yes indeed, there are those here with their heads in the sand.
Plus other places that shall not be identified
They spout off all the time about how they do not believe that adding any additive(s) is
necessary, and that our D2 here in the U S is just fine and we do not need any additives.
Some of these Russian Roulette Types are, for now, not hitting that one cylinder
containing the bullet, but the game is still relatively young for them.
In other words, time and mileage will tell!
With their luck or lack thereof, plus their lack of wisdom, that bullet may fire after
the warranty is gone, and they will see the error is their shallow thinking!
Time will indeed tell!
D
