Home > Technical (L322) > Oil analysis after a 'service required' message |
|
|
JayGee Member Since: 27 Jul 2021 Location: London Posts: 3164 |
I'd either take this up with Westway or choose a different oil ( or both). Have you had excessive oil use or smoke from the 2nd turbo? How much was the oil analysis BTW? 2012 TDV8 Vogue (L322) |
||
21st Sep 2023 3:32pm |
|
jtq4u Member Since: 23 Aug 2023 Location: Portsmouth Posts: 37 |
I don't think I can immediately blame westway, as I don't know for sure if the oil analysis company is right in saying there is no fuel dilution.
|
||
21st Sep 2023 4:25pm |
|
JayGee Member Since: 27 Jul 2021 Location: London Posts: 3164 |
I think it's safe to assume the oil analysis company can tell if there is fuel in the oil - why would you think they can't if they can do everything else. The DPF captures soot ( particles of carbon) and the 'smoke' from the 2nd turbo is actually oil vapour so it easily passes through the dpf 2012 TDV8 Vogue (L322) |
||
21st Sep 2023 4:34pm |
|
jtq4u Member Since: 23 Aug 2023 Location: Portsmouth Posts: 37 |
Fair point about the oil analysis company I guess.
|
||
21st Sep 2023 4:59pm |
|
JayGee Member Since: 27 Jul 2021 Location: London Posts: 3164 |
It should hold it's viscosity. It gets thicker as the soot load increases and thinner as the fuel contaminates it so there is some kind of equilibrium. I'd maybe be slightly concerned with the iron content as a thinner than stock oil may not provide the correct separation of moving parts esp on a high mileage engine where it's sometimes beneficial to run a slightly thicker oil. 2012 TDV8 Vogue (L322) |
||
21st Sep 2023 5:03pm |
|
garyRR Member Since: 13 Mar 2021 Location: Hampshire Posts: 1461 |
Your DPF issues - I trust you've followed all the usual causes:
|
||
22nd Sep 2023 6:51am |
|
garyRR Member Since: 13 Mar 2021 Location: Hampshire Posts: 1461 |
Your DPF issues - I trust you've followed all the usual causes:
|
||
22nd Sep 2023 7:08am |
|
jtq4u Member Since: 23 Aug 2023 Location: Portsmouth Posts: 37 |
As it turns out it wasn't so safe after all The uk analysis company outsources the lab work to a UK company, and then the production of meaningful results to a US company. I found the bloke in the US who actually wrote my oil report and he has said that the UK company wrongly tested for petrol in the oil instead of diesel. He also said that therefor the likelihood is that both the reduction in viscosity and the iron levels are down to diesel fuel dilution. I will of course be following up with a complaint to the company who took my money. |
||
22nd Sep 2023 8:41am |
|
jtq4u Member Since: 23 Aug 2023 Location: Portsmouth Posts: 37 |
I have visually inspected everything, but not yet had a high pressure smoke test, as I need to find someone local and reasonable in price to do it. I may get round to making a piece of kit myself, and doing it (but the wife generally has less interesting things to assign to my time!). Sadly most of the driving is already on the M27! probably 70% of it is at 50 to 70 mph. last week I did 120 miles to work and back >50mph. I started at 0g soot and finished at 17g soot (and a request for regen.. too late of course as I have now finished my trips on the motor way for the week). I reset the service data after changing the oil back in May.. 3000 miles ago. But as we now know the car is right to be requesting an oil change most likely. |
||
22nd Sep 2023 8:45am |
|
JayGee Member Since: 27 Jul 2021 Location: London Posts: 3164 |
Glenrands is just up the A3 from you. Suggest you book it in and they will sort it for you 2012 TDV8 Vogue (L322) |
||
22nd Sep 2023 8:59am |
|
DrRob Member Since: 16 Apr 2015 Location: Petersfield, Hampshire Posts: 4297 |
Ditto that. Drop it off with Ross and the lads. They have a smoke tester and full LR main dealer level diagnostics and excellent technicians. Tell them I sent you
|
||
22nd Sep 2023 9:02am |
|
jtq4u Member Since: 23 Aug 2023 Location: Portsmouth Posts: 37 |
As someone with a scientific background I decided there must be a way to calculate the viscosity of a blend of two liquids and it turns out there is of course.
|
||
22nd Sep 2023 9:11am |
|
jtq4u Member Since: 23 Aug 2023 Location: Portsmouth Posts: 37 |
Cool, thanks for the reference, I'll get in contact with them and see how much they charge for a smoke test. I'll also ask if my father in laws friend who works at a land rover specialist in east devon does such tests. He might of course charge my favorite price of 'free' |
||
22nd Sep 2023 9:14am |
|
JayGee Member Since: 27 Jul 2021 Location: London Posts: 3164 |
You need also to factor in the soot content and it's viscosity increase 2012 TDV8 Vogue (L322) |
||
22nd Sep 2023 9:58am |
|
|
All times are GMT |
< Previous Topic | Next Topic > |
Posting Rules
|
Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis