#1
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Oil change time castrol edge
Oil change time castrol edge 5w30 and 5w40 are both on special offer at tesco
For £25 any thoughts anybody? Should I go for the better 5w40? Does it meet Audi specs for a AQH? Please don't insult me by saying look in the useless owner manual or type in my reg and model number into a oil supplier web site as they all give different grades. Cheers Dave
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2002 S8 silver with black half leather 2000 d2 S8 in Racing green pearl, RS4 manual gearbox, 2003 A4 avant TDi 1997 Volvo V40 2.0T 1992 Mazda eunos v spec 1976 Reliant Kitten 1965 Porsche 911 |
#2
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How is it better? Surely lower viscosity is better, for both engine wear and friction/power loss.
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions and extended leather. Ski hatch retrofit. Aftermarket reversing camera. DVB-T and XCarlink now removed as redundant. 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (Even rarer than a D2 S8!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. Agate Grey/Platinum. Every option (I think) except electric rear seats, Tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon. Added Auto-dim mirror, Leather seats, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! Last edited by HPsauce; 17th May 2016 at 07:43 AM. |
#3
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Just use water
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1996 A8 4.2 QS. Bose, Solar roof, um...um... rally sport towbar. Now gone to a new home as the Traders 8. Bright yellow bus o love. |
#4
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5w is the cold start the second number is weight when hot.
Drezzy stop mucking around this is a serious subject! Still? Sparkling? Distilled? Tap? Rain? Flavoured? Soft? or Hard? You can't just say water this is a technical forum!
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2002 S8 silver with black half leather 2000 d2 S8 in Racing green pearl, RS4 manual gearbox, 2003 A4 avant TDi 1997 Volvo V40 2.0T 1992 Mazda eunos v spec 1976 Reliant Kitten 1965 Porsche 911 |
#5
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"in what shall I fetch it, dear Liza, dear Liza?"
All together now......
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim. Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!). |
#6
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They are probably both OK but only way to say for sure is to check for specifications on the can to see if and which VW specifications it meets. I think AQH engine need 501 01, 502 00 spec oil .At £25 why not go for Quantum oil which is the official VW oil:
http://www.ebay.co.uk/itm/GENUINE-VW...AAAOSw5VFWFlGu or http://www.ebay.co.uk/itm/Quantum-Lo...0AAOSwJkJWl8iL As for 5W30 or 5W40 are only a numbers for representative oil viscosity and does not necessarily say which is better oil. For one thing I would say that bigger difference between 2 numbers is better for example 5W40 is better then 20W30. There has been a push for thinner oils like 5w30 or 0w30 as they being thinner mean lower fuel oil consumption and less CO2 that manufactures can put on spec sheet but often at cost of other properties. There is a nice comparison tool here where you can compare different specification oils and their different properties: https://online.lubrizol.com/relperftool/pc.html
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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; 17th May 2016 at 10:00 AM. |
#7
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There is also some factor called High Temperature High Sheer (HTHS) measured at 150C
If I understand it correctly this is the measurement that can protect rollers/bearings better. Although our engines are not turbo so shouldn't get up to really high temps. I switched to a 5w40 oil one of the reasons was that it had a higher value for this HTHS factor. On the downside some 5w40 oils have higher viscosity when cold which could be a bit worse for the engine? https://www.waermeaustria.com/upload...e-5w-30-pi.pdf Edge 5W30 HTHS = 3.5 Cant find a HTHS for Quantum Platinum 5W40. Fuchs Race Pro S 5W40 HTHS = 4.07 Mobil 1 0W40 HTHS = 3.8 Shell Helix Ultra 5w40 HTHS = 3.68 I can't remember where I found it before so take this with a pinch of salt, those Audi specs for our engines call for a minimum HTHS=3.5 so Edge is ok, just. Oh yes just remembered, perhaps its worth considering viscosity at 100C? Higher is more protective I guess (up to a point)? Edge 5w30 @ 100C = 12 Quantum Plat 5w40 @100C = 13 Fuchs Race Pro S 5W40 @100C = 14.89 Mobil 1 0W40 @ 100C = 13.5 Shell Hexix Ultra 5w40 @100C = 13.1 - here I found this for two Audi specs. 3.5 HTHS is minimum. Last edited by Goran; 17th May 2016 at 12:02 PM. |
#8
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On the other hand, please ignore me
I'm sure all the oils that meet the Audi/VW spec. are fine. http://www.ft86club.com/forums/showp...2&postcount=19 |
#9
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Quote:
We use water lubricated bearings a lot on ships as for some reason they always seem to be very close to a huge supply of it. I personally always use Quantum oil.
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1996 A8 4.2 QS. Bose, Solar roof, um...um... rally sport towbar. Now gone to a new home as the Traders 8. Bright yellow bus o love. |
#10
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Audi use 0-30. Look for specs 502.00 and 507.00 as they superceed the old specs for Longlife and protection etc. Quantum is cheap on eBay at the moment for 5w30. 5L for £20.
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Current: MY2019.5 Ford Ranger Wildtrak 2.0 BiTurbo A8/S8 - A gap to fill. Multi-Franchise Main Dealer during the day, Amateur vehicle enthusiast by night. |
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