Motor replacement

[Robbomaz]

How could an ECU update affect oil consumption?

According to my greasemonkey mates at Holden (They call themselves GM Technical Specialists ) the ECU flash remapped how the crankcase ventilation system did its thing.......

Tis a matter of record that engines with just the flash gained 'acceptable' oil consumption.......yes, I know what that sounds like......
Acceptable might mean it doesn't seize if you miss a service interval. 15% of engines thought it was BS too

Mine doesnt use a drop between changes, but when I found out during the rebuild that the very late direct injection 6VE1's have 10 oil return holes behind the rings, where ours have only 4 I broke out the drill and added 2 more per slug. Plus, theres enough 'does not take kindly to dirty oil' stories around to scare anyone. I have a Mazda rotary oil cooler on it as well, mainly because I had a spare one.

[atilla_the_fun]

There was information coming from Australia (Holden uses the same 3.5L V6) that there could have been bad catalytic converters, much like Nissan had, that would deteriorate and score the cylinder walls.

[yellowgizmo99]

had that problem with the MR2 Spyders also with the cats, lost one of my motors that way.