Originally Posted by Toddsta
I guess I'm overly - cautious, but I would never base my oil changes on the suggestion of the oil life monitor. I know it's probably overkill, but in my NOX (although it's a V6 - not the 4) I use Penzoil Platinum Synthetic and *still* change my oil every 3-3.5k miles.
THis reminded me of the Trailblazer/envoy.
Members there were changing oil every 3000 miles with Synthetic. So why is that surprissing? Because an oil change with Filter-- called for 7 quarts of oil.
While I on the other hand- was doing 10,000 to 11,500 mile oil changes on regular Valvoline Dino oil.
So just an example...
say 2 owners drive 21,000 miles in 1 year.
21,000/3,000 = 7 oil changes. 7 oil changes* 7 quarts = 49 quarts of oil.
21,000/10,500 = 2 oil change. 2 oil changes*7 quarts = 14 quarts of oil.
Lets say they were buying quart bottles at $7 each
49quarts * $7 a quart= $343 in oil
I bought the inexpensive Valvoline
14 quarts * $3 a quart=$42
they used 35 more quarts of oil.
And many of them were not DIY-- they had Shops do the work. So we know the oil changes were MORE than $343...
I did all my oil change work... so you can see my yearly cost of oil/filter was about $50. (filters at Wal Mart)..
The other issue was-- that many of those folks--- eventually got rid of the vehicle near the 100K mark...
We still have our Trailblazer with 170,000. Runs fine.
Just yesterday I saw my DIC and noted that my Nox has 4200 miles on the current batch of oil.
I believe it said 37% OLM left.
At this rate it will reach 0% at 6500 miles or so.
Im pondering removing this batch of oil at 4500 miles and having a UOA. (also the higher iron) since its still in the wear in phase (5500 on engine).
But im thinking that it will be ok-- later on to go 6500 on PP.
I Mean-- my 2010 Traverse with Valvoline Dino- goes 5000 miles and UOA show its ok.. PP should be good to 6500.
SO Im eager to see results.
I mean-- personnally no need to underuse oil.... and spend $$$