r5turbo

Συμφωνώ 100%.

GodzillaS

10/60 ρε BMWαδάκια ?!

kosdali

godzillolado

kosdali

I'll add to this a bit with my thoughts. I think it is true that some oils will not have significant break-down when operating at 300F; some oils will still maintain its properties better than others when exposed to those temperatures. HOWEVER, that's not to say that even the good oils won't become super thin loosing their viscosity at higher temperatures.<br style="col
I found this chart online. In everyday conditions, the oil is between 90C-100C on the S2000. So 194F-212F. Standard fill is 10w-30 looks to have a viscosity of 12 cSt at 210F. This should be our baseline for ideal operation. At 280F, the viscosity of 10W-30 drops to about 7 cSt and that is an easily reached temperature for S2000s without oil coolers. Not good. The oil pressure drops quite a bit with the oil that hot with that low of viscosity. That's why before I installed an oil cooler, I only used 15W-50 at the track as the viscosity and oil pressure stays higher at almost 10.So regardless of the quality of the oil in the engine, if it's cooking at over 280Fand only 10W-30 then the viscosity could be too low for proper protection against metal-on-metal contact.



https://www.s2ki.com/...-temp-readings/

[attachment=68362:Kinematic Viscosity at 130C-100C-40C-4C.pdf]

S2000_FUN

Το περάσαμε σε άλλο επίπεδο

kosdali

οταν ξεφευγεις απο το εργοστασιακο και ασχολεισαι με πιστες θες δεν θες εχεις πας σε αλλο επιπεδο.
τα αμερικανακια βλεπω που πανε πιστα το oil cooler το εχουν ψωμοτυρι και δεν ειναι χαζοι αφου δουλευουν 25 βαθμους κατω στο λαδι...αλλιως gozzilolado