Liqui Moly additives

[drjekl]

Hi guys

I'm collecting a used 2011 125 TDI on thurs in brisbane and driving it to Newcastle NSW. I never do such a long trip as i only do suburban short trip driving mainly...

My intention was to collect the car and pull in at a SCA on the way home and purchase a diesel injector cleaner and then hit the hwy again and fill up at a caltex.

Just looking at SCA liqui moly also have the following diesel additives

algae stop
diesel purge
purge plus
diesel clean and boost
DPF anti clog
diesel injector cleaner

I noticed there was a thread in the diesel subsection for the liqui moly purge plus or something by memory but when you click on the thread it comes up page not found??

The car has had a pre purchase inspection conducted by phoenix engineering in brisbane and they've indicated there is essentially nothing wrong with the car except it looks like its missed its 60k dsg tranny fluid change (lazy owner had it serviced at ultratune a sit was next door to his workplace ) I just thought whilst I'll be doing near 900 kms in one day it would be good to run an additive through teh system.

The seller used the vehicle to commute between eumundi and brisbane so its done a lot of hwy driving, so im not expecting any DPF issues i was more inclinded to run a fuel system/injector cleaner through the car as he said he bought a new land rover 6 months ago and the passat has been sitting idle for 6 months

What do you guys recommend?

[wfdTamar]

How many km's has it done? If it's much over the 60,000 I'd be getting the DSG fluid done ASAP, even at a Brisbane dealer.

I use the Diesel Clean and Boost, but it's the kind of thing that you never really know if it does any good. I think it makes it sound a bit quieter and smoother. If you can find some of the Vortex Diesel fuel (or similar) that would be as good I reckon.

Given how it's been driven, I wouldn't bother with the DPF stuff as that's only meant for city driven diesels. Maybe the algae stuff given that it's not been used (but is that really an issue or a beat up?).

Injector cleaner maybe - There's also a product to clean the inside of the throttle body and inlet manifold - diesel engine intake decarb. It has a hose on the can. I'm going to try that as it does get gummed up in there.

[Amalgam]

If it's much over the 60,000 I'd be getting the DSG fluid done ASAP, even at a Brisbane dealer.

Absolutely agree.

Also if it was serviced at the local Ultratune et al, I would be concerned about the type of oil used. It may not be 504/507 approved and that can cause major problems to the DPF if your engine burns a bit of oil.

My understanding is that most injector cleaners are basically the same and to buy the cheapest one with the highest concentration hydrocarbons in it.

Some in this forum like Morey's Diesel Smoke Killer

MOREY’S DIESEL SMOKE KILLER | Morey's Lubrication Systems

Enjoy your new Passat, we have a similar 2012 version.

[drjekl]

How many km's has it done? If it's much over the 60,000 I'd be getting the DSG fluid done ASAP, even at a Brisbane dealer.

I use the Diesel Clean and Boost, but it's the kind of thing that you never really know if it does any good. I think it makes it sound a bit quieter and smoother. If you can find some of the Vortex Diesel fuel (or similar) that would be as good I reckon.

Given how it's been driven, I wouldn't bother with the DPF stuff as that's only meant for city driven diesels. Maybe the algae stuff given that it's not been used (but is that really an issue or a beat up?).

Injector cleaner maybe - There's also a product to clean the inside of the throttle body and inlet manifold - diesel engine intake decarb. It has a hose on the can. I'm going to try that as it does get gummed up in there.

The car had 79k kays and 80k kays when i got it home. I went straight to a local euro indy the next day and had the dsg serviced. He showed me the filter and it was a light grey colour, he said he expected it to be black... So he was unsure if because it was a highway car thats why it was quite good (less load on the tranny instead of a lot of stop start driving) or the fluid had been done already... The previous two invoices at 45 and 60k kays had no mention of tranny fluid swap...

The indy assured me he used vw fluid, after paying the invoice had Fuchs DCTF fluid... Done a quick google search and its dsg compatiable, but i had wondered why his $225 service fee was so cheap (he used a vaico filter) I'm not concerned as I know fuchs are a premium fluid supplier

Yes I'm keen to see how well the liqui moly intake cleaner works... Does the common rail diesel engines have intake buildup issues though?

Absolutely agree.

Also if it was serviced at the local Ultratune et al, I would be concerned about the type of oil used. It may not be 504/507 approved and that can cause major problems to the DPF if your engine burns a bit of oil.

My understanding is that most injector cleaners are basically the same and to buy the cheapest one with the highest concentration hydrocarbons in it.

Some in this forum like Morey's Diesel Smoke Killer

MOREY’S DIESEL SMOKE KILLER | Morey's Lubrication Systems

Enjoy your new Passat, we have a similar 2012 version.

The servicing invoices indicate that it has used the correct castrol engine oil

I dropped in at a Repco near the gold coast, they had no liqui moly additives I ended up using a penrite diesel system cleaner (good for 10000 kays apparently) the car ran really smooth prior and after the trip! I only had 800 kms to go when adding the diesel additive so I decided not to fill the tank, I filled up to 3/4 as that would get me 1200 kms and give me a stronger mix for cleaning. The car ran great and was returning a supposed 4.6-4.7L per 100kms)

DIESEL TOTAL SYSTEM CLEANER <span class="label label-danger">NEW</span>

The service indicator flashed on the way home to state the car needed a service. I got home and the next day went to SCA and bought 5L of castrol edge 5w30 (the diesel version 504/507 in the unique shaped bottle) and SCA wanted $50 for a ryco filter... Went to my local VW dealer and got a genuine filter and a new 'one use' sump plug for $30!

After draining the crankcase there was exactly 4.5L or so in the oil pan, so the car doesn't appear to have used any oil in over 15k kays and 9 months. (I dont expect any DPF issues at all)

I cant see why these vw plugs are one use, they arent aluminium or anything....

My next oil change I'm going to install a fumoto drain valve!

I'm extremely happy with the car, it needed a in depth detailing but its a great car and has scrubbed up really well.

[Idle]

The sump plug has a crush washer — hence "one use."

Use a smear of hi-temp silicon at each change and it should outlast the car.

[drjekl]

The sump plug has a crush washer — hence "one use."

Use a smear of hi-temp silicon at each change and it should outlast the car.

Ahh that makes more sense!

The bloke at the spare parts told me the thread of the plugs stretches and eventually leaks... Being new to VW I thought hmm they must be using some form of alloy plug, but when I got home it was definitely ferrous with some form of zinc coating and the threads definately would stretch on a steel plug going into a alloy crankcase.... (the crankcase thread would strip before the plug)

I noticed on my servicing reports from prior services conducted at ultratune they had $5 for a sump plug washer. Is the crush washer built into the plug? (I cant recall it being a typical two piece sump plug and washer with a Cu crush washer?)

At the end of the day the sump plug from VW was only $5 but it seems crazy to me to replace it once every 6-12 months during an oil change when they should last 20+ years really...

[Umai Naa!!]

The sump plug has a crush washer — hence "one use."

Use a smear of hi-temp silicon at each change and it should outlast the car.

Except the washer crushes to the point where the taper at the top of the thread on the plug that retains the washer starts biting into the thread on the sump.

For the sake of $4.50, use the plug once, and throw it away. A lot cheaper than a new sump.

[drjekl]

SCA currently have 15% off the liqui moly additives: