VVTs don't like Amsoil. Topic is solved

[mrbrian200]

Regarding the viscosity/ pour behavior with Amsoil. When pouring out of the bottle it behaves differently than any other oil I've ever used. I would describe: At rest/slow movement it acts no different than any other oil. But when pouring fast weak bonds between molecules loosen up and it appears to 'wish' to flow like water, but bonds between molecules prevent this with an unique appearance like 'lightly bonded flowing clumps' sort of like pouring gelatin that is just beginning to set. It's very subtle. If you're not paying close attention you might never notice. This characteristic is unique to Amsoil as far as other oils I've ever used. That's what I meant by Quaker State appearing more viscous/dense. It's characteristics when pouring are in the everything else not Amsoil category without the gel-like behavior. Not saying this is bad, might be highly desirable.

[jimmy57]

"With regard to solenoid seals isn't there something to keep engine oil out of the end bit (electro coil)? No o-ring there or nothin?"

The spool valve is precision fit in its bore where the ports are located. The end of the pin acts as armature for the electromagnet to pull it against the force of spring. The armature is much smaller than the solenoid winding bore so the oil is not trapped and there is no seal anywhere, all filled with oil.

I was curious if the CVVT response was monitored with VIDA or if it was a speculation. It is hard to say whether the cold sluggishness is in the hub or the solenoid. Knowing the oil pressure would give more clues to that one.

With solid tappets and the wider clearances they use, especially exhaust, the upper end rattle is definitely worse with thinner oils. This rattle does reduce a lot when engine has been operated with load (not idling) to get to normal temp for a few minutes doesn't it?

[Georgeandkira]

Is it a big deal to remove the CVVT solenoid in order to inspect the oil screen? Is there a gasket which would need replacement?

[precopster]

Yes CVVT gasket with integral screen.

[mrbrian200]

Update: ..this is an older thread..

Ran enough miles since the switch to Quaker State Ultimate Durability 5w30 it was due for another change 2 weeks ago.
This time there was a noticeable amount of crud/hard deposits that had worked loose and ended up around the bottom of the oil filter and the filter housing. Mostly particles a little larger than grains of sand. Enough that I felt the need to buy a can of carb cleaner to make sure I got it cleaned well out.
I never saw that with Amsoil.
Deposits on the bottom of the oil filler cap that these engines are known for is also clearing all on it's own- not completely gone yet.

Engine didn't consume any QSOD from the last change. Filled it to exactly 1/2 between the marks on the dipstick and that's where it stayed. With amsoil it used a little. Not enough to have to add between changes, maybe around 1/2 quart.

For us lucky ducks in the IL/IN/MI area, Meijer stores carry this oil (Quaker State Ultimate Durability 5w30) same price as Walmart $21 for the 5 quart jug. Since I vastly prefer shopping at Meijer that's where I'll buy it. I would shy away from the oil filters sold at either of those stores, however.