are there any additives worth trying?

 

ive used Millers before, and Forte as general diesel treatments, im more concerned about post-fix DPF+EGR problems..

 

 

 

I don't use additives but I always use premium diesel. e.g. V-Power, Texaco Supreme, Esso Supreme+ etc.

 

Drefaldwyn

35 minutes ago, drefaldwyn said:

I don't use additives but I always use premium diesel. e.g. V-Power, Texaco Supreme, Esso Supreme+ etc.

 

Drefaldwyn

 

 

i might go that route 1 tank in 4 methinks

I use it every time I fill up. Your choice. 

 

Drefaldwyn 

Skoda suggest you don't add any additives.

 

My CR140 has done ~163k and the EGR/DPF both appear to be fine without additives, I mostly use standard BP diesel but I've used supermarket fuel too without issue.

IMO the best thing to do is to save up all the money you would spend on premium fuel and additives and when you reach 60K miles, pay somebody to strip down the EGR and clean it up so its like new. Also bear in mind a lot of EGR and DPF issues are electrical/sensor faults or mechanical failures that are not attributed to how clean they are. 

 

Additives and premium fuel will probably keep the injectors in good order but after combustion i'm not convinced they can do anything.

@SuperbTWM

Its not an easy job to strip and clean on the Superbs
if your going to go to the trouble of removing your best replacing
 

Most of these additives contain a cetane enhancer so the fuel lights a little earlier in the combustion cycle. Under the right conditions this can reduce soot production and therefore DPF loading and EGR fouling. It could also (depending on the engine) screw with engine operation if it has sensors to detect start of ignition: if it detects early ignition it could start adjusting injection timing to compensate.

12 hours ago, DEL80Y said:

@SuperbTWM

Its not an easy job to strip and clean on the Superbs
if your going to go to the trouble of removing your best replacing
 

 

 

Is this the egr valve?

Yes

Tucked nicely away behind the DPF 
Not as easy as your old Skodas or Mondeos 

im using Shell or BP diesel and will use premium of either 1 in 4

 

im getting regens which is the worry

40 minutes ago, lichfielddriver said:

im getting regens which is the worry

 

That's what's supposed to happen

6 hours ago, DEL80Y said:

Tucked nicely away behind the DPF 
Not as easy as your old Skodas or Mondeos 

 

hidden - handy if its been deleted/emptied/welded and refitted...lol

 

11 minutes ago, lichfielddriver said:

 

hidden - handy if its been deleted/emptied/welded and refitted...lol

 

Except that it's the DPF that normally gets hollowed out and welded.

12 hours ago, chimaera said:

Except that it's the DPF that normally gets hollowed out and welded.

 

which must be even harder to spot...lol

 

i love the cut+gut process though, but im better at gas gas welding than MIG 

 

 

Edited 21 March, 20197 yr by lichfielddriver

The DPF is as easy if not easier to see from under the car / engine bay than the EGR.

 

The days of removing, gutting and blanking are not far from being behind us.

 

My Superb has just hit 163,000 miles without using any fuel additives, and that's been on a mix of fuels from multiple sources, including supermarkets.

 

It has had an EGR though, about 10,000 miles ago.

17 hours ago, lichfielddriver said:

 

hidden - handy if its been deleted/emptied/welded and refitted...lol

 

I must say the 1.6D does go well after getting gutted and remapped 
Even pass the MOT emissions But not obviously if they spot it has been emptied

 

7 hours ago, silver1011 said:

The DPF is as easy if not easier to see from under the car / engine bay than the EGR.

 

The days of removing, gutting and blanking are not far from being behind us.

 

My Superb has just hit 163,000 miles without using any fuel additives, and that's been on a mix of fuels from multiple sources, including supermarkets.

 

It has had an EGR though, about 10,000 miles ago.

 

 

has it had the emissions "fix"?

 

mines got 72 school days to last then happy days... 7500 miles

 

Edited 21 March, 20197 yr by lichfielddriver

Yes, it was the EGR failure that made me get the emissions fix done, so the EGR was then replaced for free under Skoda's Trust Building Measure.

If it's a ea189 engine with the fix .get it rolled  back to pre fix settings .then use archoil .and change engine oil/ filter and enjoy your new car again

6 minutes ago, kwmax said:

If it's a ea189 engine with the fix .get it rolled  back to pre fix settings .then use archoil .and change engine oil/ filter and enjoy your new car again

If it's running properly why bother with the rollback, especially when the 1.6 gets an extra 7-10 bhp as a result of the update?

... and increased torque, about 8 ft lbs. 

Can anybody prove  the  figures mentioned. As I not up to speed on 1.6 ? 

33 minutes ago, TheRobinK said:

... and increased torque, about 8 ft lbs. 

Actually it might just have been the torque that's increased. Still a useful improvement.