Heavy Weight Oil

“Popular Mechanics” is a publication I often peruse online and in print. I recently came across an article that asked the question, “Is there really any benefit or downside to using heavier-weight oils in summer months and lighter-weight oils in winter?” This is an old wives tale, so to speak, that refers to car maintenance.

Before recent improvements to motor oil, there was only one viscosity. Oil would thin out in the summer heat, so it was necessary to use heavier weighted oils. Nowadays we have multi-viscosity oils, so there isn’t a need to use weighted oils with the changing seasons. The same technology is used in outboard motor oil, like my preference, Yamalube 2 cycle oil.