Breakthrough Engine Performance 5w30 vs. 5w40 - The Essential Guide

the longer one or half you cannot interchange this okay. even if you like look similar. cannot has to be the correct size for the correct hat. Member ... MSMS3 said: ... Ultimately, any full synthetic in either 5W-30 or 5W-40 that is fully API certified for today's criteria will work fine ... ... or in-store with free nationwide delivery over £ ... COMMA - XTECH 5W30 - 1L. Part: COMXTC1L. check circle. In Stock. Map. 5W30 and 5W40 are multi-grade oils; 5W30 has a lower viscosity at high temperatures, making it thinner under heat, while 5W40 maintains a ... Even using a heavy duty diesel oil, ie Mobil 1 Turbo Diesel Truck 5w40 (or for slightly less money, Shell Rotella T-synthetic 5w-40) will be ... 5w30 has a lower viscosity of 5 and higher viscosity of 40. ... It is thicker is cold temperate and stays thicker engine heat. It is thicker in ... 5W30 has a viscosity rating of 30 cP, which is thinner than the 40 cP viscosity rating of 5W40. While the two oils have different viscosities, ... But to answer your question about whats the difference, 5w30 is a thinner oil than 5w40, hence it will provide a thinner coating on the metal in ... 5w-40 is very thick in cold, which is bad for turbo apps. This is the reason for the evolution of 0w-30 and 0w-40 oils, however 5w-30 synth is ... New member ... 5w30 is more expensive than 5w40 and 5w30 has a lower viscosity than 5w40. Your choice will depend on the temperature where you ...