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#3430713 - 07/20/14 09:46 PM Re: Running conventional in newer Euro cars [Re: KenO]
JHZR2 Offline

Registered: 12/14/02
Posts: 36804
Loc: New Jersey
Modern specs have gotten more robust, this means synthetics too. But the oil temps seen in some vehicles means that a more oxidation-resistant lube is necessary. Grp III and III+ are likely more than good enough with the right chemistry add packs, but II+ and below likely aren't, so that would be my concern.

Time at temperature = oxidation and degradation.

Also, one would have to find the appropriate spec, such as ACEA A3, which is not easy to find in a typical viscosity conventional.

#3430719 - 07/20/14 09:49 PM Re: Running conventional in newer Euro cars [Re: KenO]
Lolvoguy Offline

Registered: 02/06/14
Posts: 591
Loc: Canada
I'm actually amazed that ALL the newer turbo econo and mid size cars haven't had more engine/turbo failures when running regular oil. I mean, regardless of the technology of these newer cars, they run much hotter and are under a lot of stress that their NA predecessors weren't. I'd be interested to see how they stand the test of time.

I remember in the early 80's with Saab and Volvo being the major users of turbo's on gasser engines, these turbo setups would usually last about 100k miles then a new turbo was in order, regardless of how much you maintained them.
07 Focus ZX4 SES - Automatic
88 325is - 5 speed manual

Originally Posted By: Clevy

Ultimately my car is an appliance bought to serve me.

#3430748 - 07/20/14 10:20 PM Re: Running conventional in newer Euro cars [Re: KenO]
redhorse554 Offline

Registered: 09/29/04
Posts: 78
Loc: so cal
how about the customer that buys one quart at a time until the red light goes out. never pulls the dip stick.
'97 ford f-150 4x4(lubro 5w40)
'02 yam road warrior(motul 15w50)
'04 bmw r1150rt(motul 15w50)
'10 bmw x5m(ultra 5w40)
'12 kia optma xs(ultra 5w40)

#3431431 - 07/21/14 05:29 PM Re: Running conventional in newer Euro cars [Re: KenO]

Registered: 11/18/05
Posts: 9971
Loc: Burlington, Ontario, Canada
There is no problem per se running a conventional motor oil if shorter oil change intervals are maintained but the motivation to use a dino is initial cost savings and no one is thinking it through that a shorter OCI may be required.
What is most likely is that those going cheap on using a Dino are more likely to not check the oil level and will delay having the oil changed as required.
74 Lotus Europa 5W-50
86 Porsche 928S TGMO 0W-20 25%/M1 0W-40
96 BMW 328i Idemitsu/TGMO 0W-20 70%/M1 0W-40
94 Caterham 7 Sustina 0W-20 80%/0W-50

#3431761 - 07/21/14 10:44 PM Re: Running conventional in newer Euro cars [Re: KenO]
dparm Offline

Registered: 04/19/10
Posts: 12625
Loc: Chicago, IL
Unless of course the motor was designed and engineered around synthetic oil, as Doug Hillary has alluded to...
2011.5 BMW M3 saloon ZCP
Castrol Edge Professional TWS 10w60 + Mahle OX 254D3

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