Additives in CJAA

Carreiro

New member
Joined
Dec 14, 2023
Location
Canada
TDI
2012 VW Golf TDI
Hi there. I'm a new TDI owner (2012 vw golf 357000 km) and was wondering if I should be using any fuel additives when I fuel up. My new old car was really well maintained and runs more like a vehicle that has less than half the km. I live in Ontario Canada and try to fuel at well traveled gas stations that see regular diesel traffic. Thanks in advance for the advice.
 

Matt-98AHU

Loose Nut Behind the Wheel Vendor
Joined
Apr 23, 2006
Location
Gresham, OR
TDI
2001 Golf TDI, 2005 Passat wagon, 2004 Touareg V10.
Hi there. I'm a new TDI owner (2012 vw golf 357000 km) and was wondering if I should be using any fuel additives when I fuel up. My new old car was really well maintained and runs more like a vehicle that has less than half the km. I live in Ontario Canada and try to fuel at well traveled gas stations that see regular diesel traffic. Thanks in advance for the advice.
Yes, a quality additive that adds some lubricity and helps keep injectors clean, operating as efficiently as new, absolutely recommended for any and every diesel.

ESPECIALLY for the CP4 high pressure fuel pump equipped cars, though. I've seen some very high mile CP4 pumps with regular use of Stanadyne Lubricity Formula. I'm sure Opti-Lube XPD will also accomplish similar results. Those would be the top two on my list with a specific focus on lubricity for the high pressure pump in your engine.
 

Thunder Chicken

Veteran Member
Joined
Jul 19, 2012
Location
Sioux Lookout, Ontario
TDI
2012 Golf Wagon
I have a '12 with just over 300k km. I use power service, white bottle (winter stuff) year round, most of the time. I bought the car new and plan to keep it going as long as possible. Take your front wheel well liners out and clean the fender and lower part out, dirt will collect and rot the sills out. Undercoat it well especially in the sills and fenders and hatch. My doors were just starting to bubble around the handles. (warrenty repair).
My emmissions system has been fixed so it cant cause any more issues, if yours causes any grief, i recommend the same. The oil stays cleaner longer too which cant be bad.
Enjoy the car!
 

Lightflyer1

Top Post Dawg
Joined
Sep 13, 2005
Location
Round Rock, Texas
TDI
2015 Beetle tdi dsg
Totally up to you. Not required but won't hurt either. At times you may want to use some for cold weather maybe. Many use them and many don't.
 

MrCypherr

Veteran Member
Joined
Sep 3, 2012
Location
Ontario
TDI
Mk6 Wagon
I havent used any of that stuff in my car and it has 345k on it, But idk if this helps but I fill up roughly every 6-7 days so the fuel doesnt sit long. I just fill up at trusted stations and keep records of everytime I fill up incase there is contamination. I do plan on doing a CP3 though just for peace of mind.
 

AverageAndy

Veteran Member
Joined
Sep 14, 2020
Location
Phoenix, AZ
TDI
2013 Passat TDI SEL, 2013 Golf TDI 6MT, 2013 Jetta TDI 6MT (R.I.P.)
I've used Stanadyne Performance and Hot Shot's Secret EDT in both my CJAA and CKRA. I initially started using the EDT in my Passat as a trial. I have noticed enough of a mpg increase that it pays for the product, especially when fuel prices were higher. I also seems to keep the engine running quieter. I have kept using it on the piece of mind that it may help protect my HPFP.
 

740GLE

Top Post Dawg
Joined
Aug 19, 2009
Location
NH
TDI
2015 Passat SEL, 2017 Alltrack SE; BB 2010 Sedan Man; 2012 Passat,
I used to run power service or some other snake oil that supposed to help things, now i only run PS in the fuel filter during changes. Hopefully those big bottles don't go bad.
 

Carreiro

New member
Joined
Dec 14, 2023
Location
Canada
TDI
2012 VW Golf TDI
Thank you all for the replies. They are very helpful. The previous owner did an emissions delete and the required tune. I'm told that the tune was not for performance, but it certainly feels very peppy.

As I do research on my engine I realize that doing a CP3 upgrade may be a good idea. The question now is will a CP3 require me to redo the tune (I have no details on what tune he did exactly). Thanks in advance for all the support on this forum.
 

MrCypherr

Veteran Member
Joined
Sep 3, 2012
Location
Ontario
TDI
Mk6 Wagon
I've heard from different people you do and you dont. I do know if you run the 2200bar pressure sensor, you got to get it retuned. But if youre doing a CP3, you might as well do that sensor so, I guess in the end you have to get retuned :LOL:
 

lemoncurd

Veteran Member
Joined
May 24, 2019
Location
Eastern CT
TDI
2013 CJAA GTB2266
233k miles in my CJAA, original CP4. diesel only. fuel filter every 20k as dictated by the overlords (volkswagen)
[cp3 going on with my next timing belt, at 250k miles]
 

privateTDIjet

Well-known member
Joined
Jun 21, 2022
Location
Montreal, Canada
TDI
2009 Jetta 2.0 TDI and 2014 Passat 2.0 TDI / Ive got a MK5 bentley manual, message me for a free diagram
I have a '12 with just over 300k km. I use power service, white bottle (winter stuff) year round, most of the time. I bought the car new and plan to keep it going as long as possible. Take your front wheel well liners out and clean the fender and lower part out, dirt will collect and rot the sills out. Undercoat it well especially in the sills and fenders and hatch. My doors were just starting to bubble around the handles. (warrenty repair).
My emmissions system has been fixed so it cant cause any more issues, if yours causes any grief, i recommend the same. The oil stays cleaner longer too which cant be bad.
Enjoy the car!
That's a great idea. Never thought of undercoating the fenders to really maximize their life. Finally found a use for that bottle of rubber undercoat!!
 

BarnyardsTDI

Veteran Member
Joined
Oct 28, 2010
Location
Sacramento California
TDI
2010 Golf w/DSG, Malone Stage 2 (all emissions intact), HID's, Sunroof, Dynaudio, NAV
2010 Golf TDI with 240k miles. Used Powerservice (white or silver) at nearly every fill up. I change the fuel filter every 20k. The car runs great. First 13 years of ownership were mostly B5 diesel in TX. Now that I live in CA I mostly fill up with 76 or Costco renewable diesel.
 

Lightflyer1

Top Post Dawg
Joined
Sep 13, 2005
Location
Round Rock, Texas
TDI
2015 Beetle tdi dsg
Cold snap coming to Texas. Told my daughter to use some additive just in case. Found out the def spout fits the Power service bottle and made a neat spout for pouring it in. I had saved several of these in her trunk when adding def.
 

MrCypherr

Veteran Member
Joined
Sep 3, 2012
Location
Ontario
TDI
Mk6 Wagon
Cold snap coming to Texas. Told my daughter to use some additive just in case. Found out the def spout fits the Power service bottle and made a neat spout for pouring it in. I had saved several of these in her trunk when adding def.
Im curious, being from Canada. What temperature is considered a cold snap in texas?
 

Dannyboy

Veteran Member
Joined
May 25, 2013
Location
Mb
TDI
2014
Found out the def spout fits the Power service bottle and made a neat spout for pouring it in. I had saved several of these in her trunk when adding def.
Also screws onto certain oil containers which makes filling engine oil less messy.
 

thatwhitejsw

Veteran Member
Joined
Dec 11, 2018
Location
Clermont, FL
TDI
MK6 JSW TDI
Ive been using Hotshot's EDT virtually every fill-up and do my fuel filter changes early, checking the CP4 inlet screen each time and inspecting the residual fuel in the filter canister. I have the CP3 kit on hand however. Just trying to find the time and money to have my local shop install it.
 
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