|
XC90 '02'15 General Forum for the P2-platform XC90 model |
Information |
|
Oil Change?Views : 1146 Replies : 20Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Jul 19th, 2018, 17:36 | #11 | |
Bungling Amateur
Last Online: Today 01:22
Join Date: Aug 2014
Location: Beverley, East Yorks
|
Quote:
There is evidence to support that wear is accelerated during a cold start but this is because of the corrosive effect of in complete combustion due to the richer mixture and cooler temperatures. Nothing to do with the oil. Clearly if you start it with your foot hard on the throttle and rev the nuts off it before the oil system is fully pressurised, that's not good, but these days normal hot starts don't do anything untowards.
__________________
2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135 |
|
Jul 19th, 2018, 19:18 | #12 |
Premier Member
Last Online: Jun 21st, 2021 21:47
Join Date: Jun 2018
Location: Creswell
|
The main bearings rely on hydrodynamic lubrcation to ensure they dont touch. Without this the high loads exerted upon the soft bearing shells exceeds the lubrication provided by the residual oil film. Dont know what kind of engineer you are but you should understand how soft the shell surface is and why, and why the clearances need to be maintained 👍
Not avin a stab at ya fella, just an engine isnt a basic machine which just needs to be wet with oil. Dont get me wrong, Im not a professional engine builder or Qualified tribologist myself either! Last edited by AndyV7o; Jul 19th, 2018 at 21:07. |
Jul 19th, 2018, 21:20 | #13 | |
Member
Last Online: Aug 21st, 2023 16:18
Join Date: Nov 2002
Location: Truro
|
Quote:
Andy - can i ask about your comments here about the oil spec. Yes the engine is the d5 euro 3. I was going to use A3/B4 as that seems to be what is specified in the handbook, but interestingly an online oil suppliers lookup for my reg suggested A5/B5 only. I would have assumed that this would have been ok and backward compatible. Is this not the case? Are there problems with this oil in older D5's? Thanks Nick |
|
Jul 19th, 2018, 21:26 | #14 |
Premier Member
Last Online: Dec 26th, 2021 14:42
Join Date: Dec 2013
Location: Crewe
|
Nick, just use Shell Helix Ultra 5 40.
It's cheap yet extremely high quality and I wouldn't use anything else on a Euro 3. It's B4 spec for the record.
__________________
2002 S60 SE D5 Manual 209000 miles |
Jul 19th, 2018, 21:32 | #15 |
Premier Member
Last Online: Jun 21st, 2021 21:47
Join Date: Jun 2018
Location: Creswell
|
Check here https://www.volvoforums.org.uk/showthread.php?t=283503
If the manufacturer states B4 that is what should be used, B5 should only be used in engines which were intended to use it. I think the confusion arises in that all the other variants (of the same age) use A5/B5 and only the D5 uses A3/B4, whilst the euro 4 D5 uses A5/B5 inline with the rest of the range. It would follow logic that there is a reason the D5 was singled out to use a different spec than the rest of the range, and that during the euro 4 revision something(s) was(were) altered to use B5 safely where it wasnt suitable before. A3/B4 and A5/B5 are not sequential specs but seperate (the link will explain) |
Jul 19th, 2018, 21:33 | #16 |
Premier Member
Last Online: Jun 21st, 2021 21:47
Join Date: Jun 2018
Location: Creswell
|
I concurr with CheshireD5, the shell is bloody good stuff, and inexpensive.
|
Jul 19th, 2018, 22:14 | #17 |
Premier Member
Last Online: Feb 16th, 2024 14:43
Join Date: May 2018
Location: Na
|
As Andy v70 said the engine relies on hydro dynamic lubrication and accordingly draining and flicking over is not something I would entertain in the abscence of compelling advice. I too am an engineer and disagree that its an idea worth trying.
|
Jul 20th, 2018, 00:17 | #18 |
Bungling Amateur
Last Online: Today 01:22
Join Date: Aug 2014
Location: Beverley, East Yorks
|
Lets agree to disagree then.... :-)
__________________
2011 XC90 D5 Executive 2003 C70 T5 GT 2012 Ford Ranger XL SC 1977 Triumph Spitfire 1500 1976 Massey Ferguson 135 |
Jul 20th, 2018, 14:41 | #19 |
Premier Member
Last Online: Feb 16th, 2024 14:43
Join Date: May 2018
Location: Na
|
Lets agree to disagree yes,
Have a good weekend |
Jul 20th, 2018, 17:42 | #20 | |
Senior Member
Last Online: Nov 17th, 2020 19:43
Join Date: Sep 2014
Location: Birmingham
|
Quote:
Since ownership of nearly 5 years, I've always used Castrol 0w30 a5/b5. This year I switched to shell helix ultra professional AF 5w 30 and I've noticed an improvement in the mpg. I've never had Good mpg but the increase from 21 to 24 mpg locally is a lot better |
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|