DIY Oil Condition Tester

[oil pan 4]

I got mine in.
Back at the beginning of February I changed the oil in my wife's Hyundai and our VW at the same time put the same oil in both.
Last weekend her car showed an 8 out of 10. So I changed the oil.
The peoplescar was a 3 and I did not change the oil.
The difference between them was her car has 2 more trips to Dallas on it and it does all of our running around in town.
I only drive the VW only to and from work since running over a stick could cost me another $1000.
I only drive the VW to dallas if i have to.

We are driving both cars to Dallas again and I plan on retesting both again. A trip to Dallas for us 430 miles each way.

[MobilOne]

I have a 2001 Silverado with 6.0 gasser. It tells me to change the oil at 6000 miles more or less.

[oldtamiyaphile]

So my Prius oil finally 'failed' the test - scored a 10 after 12 months and 3,000 miles. It seems the oil tester isn't really linear, the oil sat on 7-8 for a long time, but then basically skipped the 9 and straight to 10. It was dealer oil so I don't know what was in it. Refilled with semi-synth 5W-40 as that's what I had and have no other use for.

The car's being sold so I won't be able to report any more long term monitoring. All other cars including the F1 still scored 1 or 2.

[vivo]

sounds good.