I have an '07 GT with just 4100 miles, it sits a lot, so far have changed the oil twice. Thinking about switching to synthetic oil , is this a worthwhile move?
Also, if I do switch over, I assume there will still be some residual conventional oil in the engine, how does this mix with the synthetic? Do I have to change it several times in a short period to fully get the old oil completely gone?
Also, if I do switch over, I assume there will still be some residual conventional oil in the engine, how does this mix with the synthetic? Do I have to change it several times in a short period to fully get the old oil completely gone?