Some people like to use a synthetic oil like Mobil 1 in the wintertime, and conventional motor oil the rest of the year. The synthetic oil will flow better in extreme cold.
But people have also talked about additive clash when motor oils are mixed. Is there a problem with additive clash when people change from conventional motor oil to a synthetic oil in the wintertime, and then back again?
But people have also talked about additive clash when motor oils are mixed. Is there a problem with additive clash when people change from conventional motor oil to a synthetic oil in the wintertime, and then back again?