We have a fleet of Tundras (4.7l 4x4 crewcab) that see 21 hour service, idle most of the day, respond to incidents / calls and they are lucky to get iffy Lubed every 7-9k with QS/Pennzoil 5w30.
They are running excellent after 100+K, have no issues other than weak brakes (which syn will fix
) and use little oil over the OCI.
With the $625 (a few hundred?) using the numbers above, @ $4 a gallon gas (end of next week nationwide MIN) that is almost 3000 miles worth of gas.
In the end of 125k (or 250k) your engine is not going to know the difference what you ran with 5k OCIs.
We have the older models and the new one. New ones do seem to have better brakes, ride a little rougher and the state contract specs the 4.7l. So I have no experience with the 5.7l.
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f I do run synthetic, can I do it now, and how many miles between changes?
I'd change the factory fill out at 1000-1500 miles, go to 5k with conventional then go to syn every 5k or 6 months since you have a 5year 60k mile warranty on the engine.
I'd recommend Pennzoil conventional 5w-20 or 5w30 or Havoline DS 5w-20 or 5w30 every 6 months per your manual.
But any 5w-20 or 5w30 is going to do your Toyota fine!
Enjoy the truck. Bill
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