As the title says, what do you think is better data for a deposit test? The Amsoil TEOST ASTM D6335 or the Pennzoil "Based on ILSAC GF–5, Sequence IIIG piston deposit test" Also, I belive Castrol is using the same test as Pennzoil for the Edge Black Bottle. When the latest formulation came out they made Pennzoil take down the 40% cleaner than edge and now state 42% cleaner than industry standards. (PP says 40% cleaner)
Amsoil test can be found here: Amsoil Test
Pennzoil Test can be found here: Pennzoil Test
The Amsoil test shows Valvoline with less deposits than PUP and the M1 seems about the same in both tests.
Rants, ready go!
Amsoil test can be found here: Amsoil Test
Pennzoil Test can be found here: Pennzoil Test
The Amsoil test shows Valvoline with less deposits than PUP and the M1 seems about the same in both tests.
Rants, ready go!