Ferne said:
Couple questions I have:
1. What are the benefits in switching to synthetic?
2. Does this need to be done at the dealership or can I go to Jiffy Lube etc.?
3. What brand and kind do I use? Is it the same numeric coding as regular motor oil?
Thanks!
I agree mostly with what khansen said, and will just add the following.
1. Longer time between oil changes. How long? No one really knows, but everyone has recommendations. Like khansen said -- it's silly, and a waste of money and the environment to change synthetic every 3,000 miles, but some people get nervous waiting 8-10,000 miles. Ask different mechanics until you get a general consensus, or just a number you can live with.
Holds up better in high-heat operation (which includes stop-and-go traffic).
Nominal increase in fuel mileage
Reduces the environmental impact of used motor oil by reducing the number of oil changes.
May give better cold-weather starting, but that can be dependent on other factors.
2. Anyone, anyplace, from you (not easy for Traverse), to your favorite local mechanic, to Jiffy Lube to the dealer. Just remember that sometimes you pays your money and you takes your chances.
3. Yes, the same "10w30" and such nomenclature applies to synthetic. Check the owner's manual for the Traverse's recommended oil viscosity. They can be pricey.
Brand? Any reputable high-grade one will do, just like for mineral oil. In tests, these tend to come out near the top, with not a whole lot of difference between them:
BP Visco
Mobil 1
Hi-Tec HTO
Pennzoil
Royal Purple
Castrol