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Could you please rate the oils listed below? These can be easily bought in my country in Europe (all are 5w40). If you know any details (PAO, Ester, Group 3 etc) about some oil, please drop few words here. - Castrol GTX Magnatec 5W-40: API SM/CF, ACEA A3, B3, B4, VW 502.00, VW 505.00 - Castrol...

What would you recommend as the best 5w40 oil available in Europe? I would like some PAO or Ester 5w40 synthetic. I had used Motul 300V 5w40, but it is a bit expensive and I am not sure if it can be used in a daily driver. Now I bought a used car that has used Shell Helix Ultra 5w40 for all...

What would you recommend as the best 5w40 oil available in Europe? I would like some PAO or Ester 5w40 synthetic. I had used Motul 300V 5w40, but it is a bit expensive and I am not sure if it can be used in a daily driver. Now I bought a used car that has used Shell Helix Ultra 5w40 for all...

If I understand it correctly, the oil pressure ensures lubrication and avoids metal to metal contact, while oil flow cools the metal parts. If I closed the "drain" of oil and keeped the oil pressurized, so there was no oil flow, will the oil lubricate and avoid the metal to metal contact? Just...

Today I got some nice package from Mr. postman I am a bit surprised that the Motul is very dark and the color seems to be little red: And the strange smell! It must be esters . I have never had an oil smelling like this. I hope this oil will perform well with my hard street driving...

My engine is designed for oil 5w40 (recommended by manufacturer). What happens if I change the oil to 10w60? Will I get better protection or higher wear? So far, I have read many different opinions on this topic. My friends tell me that if I want to track my car, I should change to thicker oil...

Could someone please explain me this example of HTHS comparing two oils? Motul 300V Power 5w40: Viscosity at 100C: 13.8 mm2/s HTHS at 150C: 4.51 mPa*s Castrol Formula RS 10w60: Viscosity at 100C: 22.7 mm2/s HTHS at 150C: 3.7 mPa*s I understand that at 100C, the Motul is more "like water"...