oil change interval

I have a 06 4.7L SR5 with 157,000 miles and I’m thinking of switching to synthetic oil. Any recommendations before I do my oil change? I mainly want to know if synthetic oil will help or harm my truck having high miles on it. Also if it will help, witch synthetic oil would be the best to use...

Can anybody confirm the mileage (or trigger) for the "Maintenance Required" light? Someone on here approximated it at 4500 miles. I am running Mobil1 full synthetic which could probably go a little longer than 4500 miles. Thanks!

So is anyone here with a 2010 4.6 Tundra abiding by the 10k mile oil change interval? I just hit 5k miles and don't think i could wait another 5k to change (even though i'm not hauling or using truck in extreme conditions). I know that synthetic oil is supposed to last longer but 10k miles...

Hi folks, I am new to this forum. I just bought a 2010 Tundra Double cab 4.6L 4X4 and recieved a 2 year free maintenance with it as part of the deal. They told me it is basically just 2 oil changes since these Tundras come with 0W20 synthetic oil and don't need to be changed till 10k miles! I...