Am mai gasit ceva interesant.
The Best Possible SAE 0W-60 (Very Expensive)
The Best Available SAE 5W-50 (Possible only with Fully Synthetic Motor Oil)
2nd Best SAE 5W-40 for Colder Climates (Synthetic or Blend)
SAE 10W-50 for Warmer Climates (Synthetic or Blend)
3rd Best SAE 5W-30 for Colder Climates
SAE 10W-40 for Normal Climates
SAE 20W-50 for Hot Climates**
Average SAE 10W-30
SAE 15W-40 for Heavy Duty Diesel Applications
Acceptable SAE 30 for Normal Climates, but not in Winter
SAE 40 for Warmer Climates, but not in Winter
SAE 50 for Hot Climates, but not in Winter
SAE 5W-20 for sub-zero temperatures, Winter use only**
Am verificat si este corect -25 grade pentru 5W. Conform americanilor de la synlube.com de unde am luat informatiile de mai sus cica 5W-30 ar fi ideal pentru temperaturi intre -5 si +29 grade. Ma face sa ma intreb daca acel 30 nu devine prea mic pentru verile de la noi.
Pe de alta parte am gasit si urmatoarea afirmatie "Any 5W-30 motor oil, conventional or synthetic should be sufficient for all seasons, winter and summer, even with very hard street driving." in timp ce 5w-40 ar trebui folosit doar in timpul rularii la viteze ridicate pentru o durata indelungata (cateva zeci de km la peste 160km/h). Deci 5W-30 synthetic este perfect
Asteptam pareri si de la alti membri mai priceputi.