A8 Parts Forum  

Go Back   A8 Parts Forum > General Natter > Daily banter

Daily banter For everything, and anything that doesnt fit in elsewhere

Reply
 
Thread Tools Display Modes
  #31  
Old 7th September 2017, 07:35 PM
briang9's Avatar
briang9 briang9 is offline
Senior Member
 
Join Date: Jan 2011
Location: Scotland
Posts: 2,817
Default

Quote:
Originally Posted by paulrstaylor View Post
I had 20l delivered today, this was the cheapest I could find, and that was delivered to my door
Yeah I have bought from them before, they are a reputable (as far as any dealer can be) multi franchise dealer in Scotland
__________________



Audi S8 2002, Black (even the chrome bits)
Audi RS6 Avant 2008, Daytona Grey
Maserati Granturismo 2008, Metallic Nero Carbonio
Audi S8 2015, Daytona Grey
Reply With Quote
  #32  
Old 8th September 2017, 01:13 PM
Goran's Avatar
Goran Goran is offline
Senior Member
 
Join Date: Feb 2011
Posts: 2,176
Default

This looks useful too, its for USA I couldn't find the UK/Europe bulletin. Must be available somewhere.

https://www.audiusa.com/content/dam/...e-Bulletin.pdf
Reply With Quote
  #33  
Old 8th September 2017, 01:17 PM
Goran's Avatar
Goran Goran is offline
Senior Member
 
Join Date: Feb 2011
Posts: 2,176
Default

Interesting thread

https://www.bobistheoilguy.com/forum...or_am_I_wrong?

Attached Thumbnails
Click image for larger version

Name:	VW oil spec.png
Views:	325
Size:	209.4 KB
ID:	16956  
Reply With Quote
  #34  
Old 8th September 2017, 08:35 PM
David's8's Avatar
David's8 David's8 is offline
Senior Member
 
Join Date: Jan 2012
Location: Helensburgh, Scotland
Posts: 3,506
Default

This diagram from the oilspecifiation.org site was quite good i thought.
Attached Thumbnails
Click image for larger version

Name:	VAG Oil.jpg
Views:	184
Size:	64.7 KB
ID:	16963  
__________________
2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
Reply With Quote
  #35  
Old 8th September 2017, 10:02 PM
Simonbartlett Simonbartlett is offline
Senior Member
 
Join Date: Jan 2017
Posts: 202
Default

Quote:
Originally Posted by David's8 View Post
This diagram from the oilspecifiation.org site was quite good i thought.
Yes and one of the few sources that correctly says the R5 2.5tdi needs 506.01, its unusual for anyone to get that correct.
__________________
Owner of a 2008 A8 3.0tdi SE
Reply With Quote
  #36  
Old 8th September 2017, 10:50 PM
ainarssems ainarssems is offline
Senior Member
 
Join Date: Aug 2010
Location: Rushden, Northants
Posts: 3,799
Default

I will just add a couple of my thoughts:

1. About engine flush. I don't think it is needed for engine and oil made in last 30 years which has been regularly serviced and not overheated. Flushes were designed to dissolve burned on deposits from old mineral oils. Modern oils have additives that take care of it and should not be a problem for modern synthetic oils if they have been changed to schedule and engine have not been overheated causing oil to burn on. In the rare cases if engine oil is too diluted with unburned fuel they may even cause damage to engine by diluting oil even further. It's an unlikely scenario but on diesels with DPF being driven short distances oil contamination with unburned diesel can reach over 40% between oil changes. In most cases flush will not do any good or any harm, just a waste of money.

2. I like the idea of 2 oil changes but I do not think it is necessary, the oils are designed to have up to 40% dilution and if you change them at intended intervals or sooner you will be OK apart from some rare cases on diesels with DPF which are driven short distances.

3.Dealer oils like Quantum are designed to be good enough for most of their cars most of the time but they are not the best. So certainly there is a room for improvement.

4. Many of modern oils are designed to meet emissions and fuel efficiency, they meet minimum requirements for engine protection but they are not necessarily the best. For the England you do not need 0Wxx or 5Wxx oils, it's just that they are thinner so introduce less resistance and require less energy so are better at fuel consumption and emission but are not necessarily good for engine. That being said modern engines are made good enough to make it through warranty period even with lesser oils. I don't think manufacturers are particularly interested in what happens after 100k miles.

Just to end this I think Quantum Longlife III is a good oil for every day driving and occasional push but should not be used for 18k miles which manufacturer allows but changed at least once per year.

If you take money out of equation 10W60 oil should be better if you drive hard and everything else is equal.

You may also consider molybdenum disulfide powder additive to the oil which will reduce friction, wear and temperature. Don't buy the liquid ones as they will just dilute the oil, get the powder.
__________________
Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D

8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure

Last edited by ainarssems; 8th September 2017 at 10:54 PM.
Reply With Quote
  #37  
Old 8th September 2017, 10:53 PM
briang9's Avatar
briang9 briang9 is offline
Senior Member
 
Join Date: Jan 2011
Location: Scotland
Posts: 2,817
Default

Quote:
Originally Posted by David's8 View Post
This diagram from the oilspecifiation.org site was quite good i thought.
Slightly confused now, this suggests 507 is for Diesel, whilst my handbook for the RS6 suggests 507 is the correct spec, I know it supersedes previous 50* for the S8, so hence confusion from a simple country boy in a very dreich Scotland..
__________________



Audi S8 2002, Black (even the chrome bits)
Audi RS6 Avant 2008, Daytona Grey
Maserati Granturismo 2008, Metallic Nero Carbonio
Audi S8 2015, Daytona Grey
Reply With Quote
  #38  
Old 8th September 2017, 11:01 PM
ainarssems ainarssems is offline
Senior Member
 
Join Date: Aug 2010
Location: Rushden, Northants
Posts: 3,799
Default

Just to make it simple:

You can use diesel oil in petrol engine most of the time. If you want to use petrol oil in diesel there mo more research to be done.

In the old days the difference was that diesel oils had more sulphur neutralising additives, later they had more high pressure additives for PD and less ash to preserve DPF's
__________________
Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D

8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 11:01 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.