Engine oil OEM Toyota or AMSOIL

I changed to that and really happy with it so far, shifting is butter smooth.

Toyota OEM oil has 10x the amount of thr dry lubrication additive molybdenum in its additive package. The dealerships use bulk Mobil 1 oil when they do your oil change. This is why everyone should change their own oil.

Based on my own tests, I found the AmsOil to be the best at reducing heat a few degrees. It's not cheap, but it's still cheap insurance, all things considered.

I use Amsoil 20w50 in all 3. You don’t need a different oil for the trans. Amsoil is not cheap but I’ve been using it on my 03 FatBoy since new and have had no problems.

Originally switched to Amsoil for the Noack rating but stayed because it's just good stuff. I now run Amsoil products for all fluids in all vehicles.

I use AMSOIL 5W-30 for both of our vehicles. Never had any issues on either vehicle using AMSOIL.

Amsoil Signature 5w-20 + K&N Gold oil filter (HP1017 for 4th gens, not sure about 5th) is arguably the single best combo if you can afford the oil. Your lobes will thank you.

Mijn prius uit 2005 krijgt niks anders. Ik rijd er al mee van 220k tot nu 397k. Still going strong!

I just switched over to amsoil and my mpg went down marginally. Also using the PPE larger oil filter 10 micron filter.

I've used amsoil 5w40 European formula ir worked great for when it was a street car, switched to royal purple 5w-40 due to a recommendation and immediately regretted it, tons of blow by I didn't have before. Dumped the royal purple CRAP as soon as possible, just a few miles on it.