2002 Cavalier; Petro-Canada 5W-30; 8881 miles

[addyguy]

Got my third UOA back on my Cavalier.

This was a 6-month run over the summer of bulk Petro-Canada 'Supreme' 5w30 conventional, installed by a Q-L I go to.

Driving was basically an equal mix of 'everything' - city, highway, short trips, long trips, idling....

2002 Chevrolet Cavalier, 2.2 OHV
132,708 miles on unit (212,333 km)

Petro-Canada 5w30 'Supreme' conventional
Purolator Oil Filter
4.0 litres initial fill; no top-up; 0.75 litre consumption
8881 miles on oil (14,210 km)

Iron 22
Chrome 1
Moly 162
Alum. 5
Copper 3
Lead 11
Tin 1
Titanium 0
Nickle 1
Silver 0
Silicon 26
Sodium 8
Potassium 0
Zinc 727
Magnesium 6
Phos. 649
Barium 0

Soot 0
Sulf. 31
Oxid. 27
Nitrat. 18

100C visc - 8.97
TBN - 0.5

Anti-freeze, fuel, water all 0

I find this report interesting, because I've definetly found the 'ragged edge' for conventional oil in my application. My last UOA was a similar conventional oil, run to 8018 miles (w/o top-off), and my TBN was 1.5. Now I've gone another 800 miles, and my TBN is completely spent.

I'm somewhat suprised at the Si reading. I did change my A/F about three-quarters of the way through this interval, and it was very dirty, but not rippped or mis-aligned, so I'd expect it to filter well. I'll re-check myy new filter at some point soon.

Even with these issues, I'm impressed with the wear numbers I got. Not bad when you consider how far I pushed this. I will learn from this, and will keep future intervals below 8k miles.

Would love to hear any thoughts or comments!

 

[daves87rs]

Wow! Not bad at all!


I can't get her Cavalier past 5.5k on M1....granted, her 2.2 (Eco) does almost all city driving, but I want to do a used oil analysis to see how spent it was.


Have to say the oil did pretty good...

 

[21Rouge]

Addy I do agree with your observations.

Well done as that is alot of mileage and time for this dino...a bit brave?; and it looks like you drained it just in time (according to the TBN).

Addy, wouldnt you now like to see a used oil analysis on your Cavalier for the Petro Canada 5W30 Supreme Synthetic for a similar OCI...just to see how much better (or not) the wear #s might be?

 

[addyguy]

Originally Posted By: 21Rouge
I do agree with your observations.

Well done as that is alot of mileage and time for this dino...a bit brave; and you drained it just in time (according to the TBN).

Addy, wouldnt you now like to see a used oil analysis on your Cavalier for the Petro Canada 5W30 Supreme synthetic) for a similar OCI...just to see how much better (or not) the wear #s might be?


I would...that would be very interesting!

Don't know if it's going to happen, though...I've got another fill of this oil in it; and I have a jug of Pennzoil Platinum 5w30 I got from Walmart ($21.88 sale) to 'go through' first.

 

[webfors]

You nailed your own analysis. Oil is past spent. I wouldn't do this too often if you care about the car. I like to see some tbn buffer when I drain it ~ 2-3. I'm running a 10-12k km (6-7k mile) oci with Pennzoil Platinum 5w30. That's my max. It would be a good choice if you want to continue running this interval, but even PP shouldn't be run past 10k mile IMHO under good conditions.

 

[pbm]

I think your UOA was very good considering that you didn't 'top-up' the .75 litre that was used. I think you would have had an even better report if you added a half quart at about 5K.
Is this an Eco-Tec 2.2 or the old OHV 'thrasher'.

 

[21Rouge]

Originally Posted By: webfors
You nailed your own analysis.


+1

Addy, there is no doubt you are getting good at this stuff.

 

[addyguy]

pbm,

It's a OHV 'thraser'. Very solid engine, just noisy.

webfors,

I am planning on 'backing off' my intervals, if I can. Things don't always happen the way I want to, tho. My 'plan' right now is to run my current fill to about 7-7.5k miles, and then run the PP I have for a full 10k. We'll see how it goes!

 

[webfors]

Looking forward to seeing the next two used oil analysis, especially the PP at 10k

 

[webfors]

Who's the lab? And what's the cost?

 

[pbm]

pbm,

It's a OHV 'thraser'. Very solid engine, just noisy.

My father had one and they sound like a tractor but run forever if maintained.

 

[addyguy]

Originally Posted By: webfors
Who's the lab? And what's the cost?


Toromont-Cat Labs. There is a large equipment dealer about 15 mins. from my house. I just go in there and grab one kit at a time, and it costs $18/kit + taxes = $20.34.

Kit doesn't test for Calcium and Boron, which is a bit of a bummer. But it does include TBN and 100C visc. if you ask for it, so it's a bit of a trade-off.

For the simplicity and cost, I'll most likely stick with them.

 

[saberz]

Not a bad UOA. I'd suggest as you stated to back off it a bit to 7.5k. At 8800 the oil was on life-support, but for a dino thats very impressive to say the least.

 

[FZ1]

7500 max even when you run the PP.

 

[GMFan]

8881 miles...and to think some don't have the guts to run dino a mile past 3,000.

The oil is definitely spent and you got your moneys worth.

Does Petro-Canada manufacture their own motor oil, or are they supplied by a 3rd party?

 

[mechanicx]

I wouldn't run conventional more than 7500miles all highway and good weather. Although I'm one of those that changes the conventional oil and filter every 3k

.

 

[OVERKILL]

Originally Posted By: GMFan
8881 miles...and to think some don't have the guts to run dino a mile past 3,000.

The oil is definitely spent and you got your moneys worth.

Does Petro-Canada manufacture their own motor oil, or are they supplied by a 3rd party?


They make their own. They also make their own gasoline. They are a big player up here.

 

[tig1]

It's my view you went past the ragged edge. I wouldn't go past 5000 miles with dino. Maybe you could fudge on that a bit, but not much.

 

[Patman]

Originally Posted By: pbm
I think your UOA was very good considering that you didn't 'top-up' the .75 litre that was used. I think you would have had an even better report if you added a half quart at about 5K.


I agree, that 0.75 of a liter represents almost 20% of the total oil capacity here, so the TBN would've definitely been a lot better if that much had been added during this interval.

 

[JohnBrowning]

This is teriable....TBN=0 after this short of a run !!!!! The iron is high, lead is high and cromium and tin should not even be present let alone together at 1 in this shourt of an OCI! If the TBN was 1.5 not 0.5 then it was still not good just not terrible! I would not use this oil in anything I own not even my lawn mower! Look how low the all AW and EP additives are.