Hey Everyone:
It's my 2006 Hyundai Santa Fe 2.7 Litre V6 naturally aspirated with no mods.
The engine was always well maintained by me and here is the history of the oil and changes.
First 80K KM used Mobil 1 5w30 Synthetic changed at 5K intervals
80K - 100K KM - Amsoil SSO changed at 5K intervals for warranty and because I was flushing out the engine before doing extended drains with Amsoil.
100K to current - Amsoil ASL 5w30 with 10K KM change intervals.
Switched to Pennzoil Platinum for ARX Clean/rinse cycle and running for recommended intervals as per ARX.
I intend to use 1 Amsoil EAO oil filter during the rinse phase as these filters are built well with excellent flow, and I think I maintained my engine well enough that there shouldn't be too much deposit in this engine.
The filter wasn't heaver that normal, but I have noticed that the engine does seem to have better get up and go. It doesn't feel lazy at all (common complaint by 2.7L owners).
I have also noticed that the oil cap was a bit cleaner...
IMO this product works as claimed. I would have loved to open the valve covers for everyone but I didn't because I don't want to break the factory seal as nothing is leaking, and because it's a PITA on this car to get to with all the [censored] that runs all over the engine, the plastic housing and the spark plug tubes.