A25A FXS oil

[Sacredheals]

I am trying to avoid the ring stick issue on Toyota engines and keep it as clean as possible... I know for the most part any HPL oil works but I was wondering if any of the experts want to weigh in...

I did message David and he said the Supercar oil would be fine, which I know is basically just a Euro oil at the end of the day which I was picking between the 0W30 and 0W40 for higher HTHS ... I was wondering if there would be any benefit of running say the 5W30 or 10W30 Euro no VII or even another series of their oil? My biggest concern is engine cleanliness especially piston ring cleanliness... I've been doing 3K intervals with Mobil 1 Full Synthetic 0w40 recently and it's been doing fine but I know there is better than that with how easy that oil shears. I also like the Valvoline Restore and Protect but I wish it came in a thicker 5W40 weight to account for shear.

Edit: For more info, I can drive long distance and many miles a LOT, I rarely do short distance driving, and the lowest the temp gets when I drive is right about at the 0F mark.. So using heavier oils is not a concern for me at all.

 

[MurkyAsparagus]

I may, but I thought they did the hypermiling technique of being at roughly 80-90% throttle under load

Not really. I don’t actually know of a hypermiling technique that does this high RPM method.

The most common hypermiling technique is just lean burning, such as in the early G1 Honda Insights.

Toyota uses an Atkinson Cycle engine, where the compression stroke is shorter than the expansion stroke. This increases efficiency by allowing for combustion to push the piston further down over a longer period of time.

 

[Sacredheals]

Not really. I don’t actually know of a hypermiling technique that does this high RPM method.

The most common hypermiling technique is just lean burning, such as in the early G1 Honda Insights.

Toyota uses an Atkinson Cycle engine, where the compression stroke is shorter than the expansion stroke. This increases efficiency by allowing for combustion to push the piston further down over a longer period of time.

I didn't say high RPM. I said high throttle. In a manual transmission you go towards your torque or power band depending on the engine generally or somewhere roughly lower RPM and higher throttle generally 80-90% to get to speed quickly. Then reducing to either killing the engine or as low of throttle as possible.