Originally Posted by
Ricardo
ok i see.. so let me clarify why i said that
generically
the factory synthetic means... a guy buys a car to work all over the country... in 2 years he can do 50000 Km with that oil... with no problems.. driving in highway all the time, the aditives make the oil so stable that it lasts longer
within this... M1 0W40 is known ironicaly as mobil's best 5w30 oil-- it brakes down after 3k miles or 5k km
and this is european perspective - how i live it
mobil 1 (0w40) as low quality oil means .. to me my experience
low quality means a oil that is defective in lubricating a undersquared engine... where the loss of power is evident, to me indicates optimal lubrication not present.
my experience is limited to seeing the reactions of a 90mm stroke engine to that oil... its very sensitive to the oil ... i read a lot in the net and looked at a few UAO's. So any change in the oil i easily noticed. Noise, output, level drop, color, start-up noises. All that changes noticeably when the oil changes.
Now.. You guys have V6 V8 etc... thats a difierent story. Much more forgiving. Mobil 1 can lubricate that type of engines a lot easier. Engines are very smooth inside. Thats why you can - after all - use much thiner oils nnW20 or nnW30. Longer roads you have too.
Here in average-joe workshops...(southern europe) only more recently, regarding "modern" engines people started to know the engines as requiring aplications of thin W30 oil...
about prices
example honda' s 10w40 OEM oil self at 45eur = 4L (castrol GTX series...professional series)
100% syntetics are very rare... only OEM oils perhaps
GC costs 100 euro... (4L) sell best at 80 €,. few can buy it lower.. its edge 0w30 and 5w30
any good "fully" syntetic (hidrocraked) costs 50 to 70 € (5w40 or 0W40) total cepsa BP
M1 = 45 € its the cheapst of the fully syntetics
semi-syntetics (10w40) cost average 30 € to 50 €
then minerals go from 19 to 30 € (10W40) (15W40) (20w50)
THE cheapest oils cost 3,5 €.
that cheap oil.. .can give us lots of easily burned and evaporated oil, but not that hard gunky sludged oil as the bigger V-engines are more prune to suffer from.