Oil Sampling

[MysticGold04]

I have a previous changes' sample in a blackstone bottle... would I be okay dumping that sample and getting a new sample in the same bottle this change? Or would it skew the readings? What I'd like to do is get a sample this change, switch to Havoline 5w30 for 2 changes and then get another sample to see how my truck does on both oils... any comments? Thanks

 

[MysticGold04]

Just bought 2 (5K miles) changes worth of the Havoline to try out... We'll see what happens.