Originally Posted by TacoDaTugBoat
I don't think I could get compfortable doing oil changes at 10,000 miles! Even with Synth. But the idea of it turning easier in the winter sounds nice.
Factory oil change intervals remain
the same if your run synthetic oil or dyno. I do not see why all these guys out there think they can double the oil change interval because they run synthetics. I can see going longer then factory intervals if needed at times, and not being too worried, but not double or 5000 miles extra. For typical, day to day driving, with no additional work load, ie towing, hauling, etc. dyno oil will be fine for most drivers who change their oil & filter between 3-5000 miles.
Racing applications, hard driving, excessive work loads will raise oil temps typically, putting stress on the engine oil and likey shortening the oil life. For "Maximum protection against thermal breakdown", using synthetics while driving under extreme conditions should give you greater protection while running the motor hard.
I currently run dyno in the engine, and do an oil & filter change every 3-4000 miles, using good quality oil and filters. No extreme conditions for me thus far. The factory recommends changing the oil every 3000 miles under extreme conditions. So, Toyota has determined it seems that we will be fine running dyno oil, changed every 5000 miles or 6 months, under normal use, but under extreme use, every 3000 miles. They appear to be adjusting to the faster breakdown period oil will go thru running your engine hard.
I guess my point is, there is no reason to pay higher prices to run synthetics unless you...
- just want the best for the motor, and overkill is your style.
- looking for minor gas savings over the long run. If this is your main reason, my guess you will never make it up for the higher price you pay for the oil. But this will be an added benefit if you run synthetics over the long run and for other reasons.
- work you truck under extreme conditions, and want to get 5000 miles of good protection between intervals and not be forced to change at 3000 miles because your running dyno oil.
- Have always used dyno, changed every 3000 miles and I want to change your carbon footprint, and use less oil in life. Going to synthetics will give me the security to change my oil every 5000 miles, and with minor gas savings as well.
Enough rambling- that's my take on synthetics...