synthetics
it is never to late to put synthetics in the only thing that might be an issue is if you have an oil leak organic oils are thicker and don't seep as much but that also tells you that you will see improvement in mileage hp and wear and tear. amsoil is what I'm runnig in my truck, wifes car, and my motorcycle and I love it oil change intervalls are 15000 mile rather than 3000. check out the link below (lubedealer.com) it will send you to my supplier he will give you a better deal than you will ever find from any supplier unless you are a dealer and when you when see how much you like it you can even ask to be a prefered customer, if you buy a lot,.
check out the site and tell him you heard it from Brandon he will help you out
enjoy the long term savings I do!!!
BRANDON