Here is some food for thought that might play with your mind a bit. I had a 2002 Honda Goldwing and after the first oil change I went to Full Synthetic AMSOIL doubled the service interval which was allowed since I used the AMSOIL filter , I did that for all the oil changes(traded the bike at 38,000miles) right up until I traded the bike on my HArley that I still own and which I use Amsoil in that as well. Never a problem, never used any oil, never burned any oil, leaked any oil , nothing. The company I last worked for had newer trucks, then bought new Kenworths, tri-axles, trucks were great ran good no problems, after the first few oil changes they switched from Shell Rotella to Amsoil all but 2 trucks, the remaining 8 trucks started using oil every other day we had to add oil, needless to say they switched back to Shell. The cost was very high for the Amsoil over the Shell's price they bought oil in those big plastic totes I guess about 500 gallon at a time. Was that a fluke maybe I cant say, I am still going to use synthetic because I feel it gives a better lube to the engine parts no matter of the temps outside synthetic still flows and lubes the parts. I did notice another member said the change times do not justify the use of synthetic but MY own opinion is for the few dollars more you will pay for the 3 quarts of oil is minimal and not a bother when you consider the superior lubrication you would get from a full synthetic oil, STRICTLY MY OPINION THAT IS. I like amsoil myself and I'm sure there are others out there that like other brands it's a matter of choice.
