Quaker State Advanced Full Synthetic 5W/30 (Purchased summer 2007) I'm pretty sure it's API SM
but I've already disposed of all the bottles.

Engine: Toyota 1.8L 4-cyl
Make/Model: Chevy Prizm
Oil Filter: Wix
Air Filter: Toyota OEM (Denso)
Months in Service: 6

Most trips were 2.5 to 6 miles. One 1,200 mile trip and a handful of 20 to 50 mile trips.
The driving conditions have been pretty gentle, especially with the flat Indiana terrain, and
summer driving; though we did take it into the PA mountains on the 1,200 mile trip.


Comments from Blackstone:

Everything looks good in the first sample from your Prizm. Neither the short daily trips nor the one
long haul seems to have bothered your engine at all. Universal averages for the 1.8L are based on an oil
run of ~6,500 miles. We think running your next oil that long would work out just fine for you. The TBN read
2.7 so you had plenty of active additive left to have run this oil a bit longer. We consider a TBN reading of
around 1.0 too low for extended use. No harmful contaminants were found in your sample of used 5W/30.
Nice engine!





Filled it up with the same oil for this run though there was some strange residue in the bottom of the bottles: http://www.bobistheoilguy.com/forums/ubb...308#Post1653308

Planning to switch to Pennzoil Platinum
after that.

The Blackstone recommended increase in OCI by 2,000 miles seems like big increase to me but
certainly fits with the numbers I've seen on the other UOA's posted here. Thoughts?

Looks like a good oil for 6-7,000 mile runs.

1ZZFE motor, looks good. Wish the tin was lower (like zero). Si is a little high so look at that. (I like single digits)

Good flashpoint.

Good UOA for short trips mostly. TBN takes a hit with short operation.

I'd say 7-8k is prob the sweet spot for this oil in the summer. Shorter in the winter.

Thanks for the UOA!

Bill

PS: The oil WAS SM if bought in 2007.

Looks good!

Yeah I thought the silicon looked a little high. After only 12,000 miles I've noticed the air filter looks a bit dirty. I'm thinking that maybe with all the farms around this is just an extra dusty climate.

does your prizm use any oil?

Not over 4500 miles ..or so it appears

Nope no oil consumption to date.

You're lucky - Toyota 1.8's of this era often eat a lot of oil.

Results look great!

great uoa, i just dumped quakerstate after 5-6k miles. using synpower atm.

I've noticed the residue in the bottom of the quarts of PLATINUM . After that would shake them up real well before pouring in the engine . I shake all bottles of oil since . Habit forming . Thanks for the U.O.A. as well . Great car too .