chainging to new oil
5=viscosity, W=winter grade and 30 is the weight of the oil at operating temp. Higher the viscosity the more resistance to flow, less viscosity the less resistance to flow on initial start up.
Trust me I produce this stuff.
Kaiso
Petroleum Engineer
Why would you use a lighter viscosity oil in the summer and a heavier one in the winter, does not make sense? 5 is thiner than 10 so in the summer hotter days yes I could see you running a 10/30 not a 5/30. Here we used to run 5/30 in winter and 10/30 in summer. With todays cars it is just beneficial to run 5/30 all year round even in warmer climates because on the colder days it takes less time for the oil pump to move 5/30 weight oil to the top end of the motor quicker and once your car gets to operating temp. it stays at a 30 weight.
5=viscosity, W=winter grade and 30 is the weight of the oil at operating temp. Higher the viscosity the more resistance to flow, less viscosity the less resistance to flow on initial start up.
Trust me I produce this stuff.
Kaiso
Petroleum Engineer
5=viscosity, W=winter grade and 30 is the weight of the oil at operating temp. Higher the viscosity the more resistance to flow, less viscosity the less resistance to flow on initial start up.
Trust me I produce this stuff.
Kaiso
Petroleum Engineer
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