Rotella10/30,5206 miles, '06 Corolla
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dnewton3
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I often take two samples when preparing for a used oil analysis. Since the Blackstone bottles are free, I typically fill two, but only send one off.
That way, if there is a concern on a used oil analysis (such as here), you have another sample from the same load, for the double-check. As suggested, if you do a second test on the same load, let them know your concerns and they'll put extra emphasis on it.
That way, if there is a concern on a used oil analysis (such as here), you have another sample from the same load, for the double-check. As suggested, if you do a second test on the same load, let them know your concerns and they'll put extra emphasis on it.
I'm not surprised. OP drives mostly in city in Texas. This engine tends to run rich on start and then heats the oil a lot. There is a reason Toyota went to 5000 miles max in this engine.
When I did UOA in mine (granted, long time ago with SL conventional oil), oil thickened to 40 weight in 5000 miles of city/high speed hwy in hot climate.
TBN 1.8 is not spent oil BTW. 6-7000 miles is doable on this oil. I wish I knew where to get it.
When I did UOA in mine (granted, long time ago with SL conventional oil), oil thickened to 40 weight in 5000 miles of city/high speed hwy in hot climate.
TBN 1.8 is not spent oil BTW. 6-7000 miles is doable on this oil. I wish I knew where to get it.
Originally Posted By: friendly_jacek
There is a reason Toyota went to 5000 miles max in this engine.
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
There is a reason Toyota went to 5000 miles max in this engine.
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
Originally Posted By: 21Rouge
Originally Posted By: friendly_jacek
There is a reason Toyota went to 5000 miles max in this engine.
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
GM doesn't have the volume of Toyota, so they allow you to kill your engine faster that Toyota so you are back in their showroom faster.
Originally Posted By: friendly_jacek
There is a reason Toyota went to 5000 miles max in this engine.
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
GM doesn't have the volume of Toyota, so they allow you to kill your engine faster that Toyota so you are back in their showroom faster.
Is this model usually hard on oil?
Report looks great.
Report looks great.
DOHC, Timing chain, VVT and direct-acting cam over bucket tappets. I think the oil is hard on the engine
Originally Posted By: ARCOgraphite
DOHC, Timing chain, VVT and direct-acting cam over bucket tappets. I think the oil is hard on the engine
I have the 1ZZFE in an 08 Toyota and have done some research on this engine. The general consensus is that the 1ZZFE is a pretty bullet-proof little engine but it really likes 6 month OCIs max.
I know Bill in Utah has an 05 Corolla and has had a lot of stellar used oil analysis using whatever is on sale at the time dino. I am not sure of his OCI, although I think he goes 6 months.
DOHC, Timing chain, VVT and direct-acting cam over bucket tappets. I think the oil is hard on the engine
I have the 1ZZFE in an 08 Toyota and have done some research on this engine. The general consensus is that the 1ZZFE is a pretty bullet-proof little engine but it really likes 6 month OCIs max.
I know Bill in Utah has an 05 Corolla and has had a lot of stellar used oil analysis using whatever is on sale at the time dino. I am not sure of his OCI, although I think he goes 6 months.
Looks like an excellent UOA....Seems like the oil is doing a very good job at protecting the engine...The TBN is a little low for 5,200 miles but I wouldn't even worry about it...Just keep your intervals from 5,000 to 6,000 miles...
I would try it out to 7500. The TBN is looking low but it will probably hold here for some time before going lower.Keep in mind that with BlackStones method of TBN unless it changed you can easily go down to 1 and still have plenty of headroom! With Redline for example you can take it down to 0 using Blackstones method of TBN and still be protected. So this is important to keep in mind. I doubt any other conventional oil is going to do any better.
Originally Posted By: 21Rouge
Originally Posted By: friendly_jacek
There is a reason Toyota went to 5000 miles max in this engine.
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
Well, the car manuals do not get retrospectively updated. My manual (2003) for Corolla stated 7,500 miles/6 months vs 5,000/4 months for the regular/severe service respectively. BTW, you may want to double check, should be 6 months and not 12 months in your manual or GM made a mistake.
Yet, in the response to sludge issues (in different engines though), 5,000 miles is the max in Toyota now, or at least last time I checked.
If I drove hwy only, 7,500 miles would be doable with good oil. In city or mixed driving, 5,000 miles kills conventional oil in this engine.
Originally Posted By: friendly_jacek
There is a reason Toyota went to 5000 miles max in this engine.
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
Well, the car manuals do not get retrospectively updated. My manual (2003) for Corolla stated 7,500 miles/6 months vs 5,000/4 months for the regular/severe service respectively. BTW, you may want to double check, should be 6 months and not 12 months in your manual or GM made a mistake.
Yet, in the response to sludge issues (in different engines though), 5,000 miles is the max in Toyota now, or at least last time I checked.
If I drove hwy only, 7,500 miles would be doable with good oil. In city or mixed driving, 5,000 miles kills conventional oil in this engine.
Originally Posted By: friendly_jacek
Originally Posted By: 21Rouge
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
BTW, you may want to double check, should be 6 months and not 12 months in your manual or GM made a mistake.
If I drove hwy only, 7,500 miles would be doable with good oil. In city or mixed driving, 5,000 miles kills conventional oil in this engine.
I just pulled out my 05 Vibe manual and it reads:
Change the oil and filter every 7,500 miles (12 500 km) or 12 months — whichever occurs first. (Of course this is permitted when the car experiences mostly HWY driving.)
I think my last two OCIs have been around 6 months with mileage coming in at 3k to 4k miles. I always use a high quality synthetic.
Originally Posted By: 21Rouge
And yet for my 05 Vibe with the same engine the GM owners manual 'permits' 7500 mile/12 month OCIs (non severe service).
BTW, you may want to double check, should be 6 months and not 12 months in your manual or GM made a mistake.
If I drove hwy only, 7,500 miles would be doable with good oil. In city or mixed driving, 5,000 miles kills conventional oil in this engine.
I just pulled out my 05 Vibe manual and it reads:
Change the oil and filter every 7,500 miles (12 500 km) or 12 months — whichever occurs first. (Of course this is permitted when the car experiences mostly HWY driving.)
I think my last two OCIs have been around 6 months with mileage coming in at 3k to 4k miles. I always use a high quality synthetic.
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Quote:
Change the oil and filter every 7,500 miles (12 500 km) or 12 months — whichever occurs first. (Of course this is permitted when the car experiences mostly HWY driving.)
That's still oddly worded. How could someone (as in likely to) accumulate only 7500 miles in a year doing mostly highway mileage? How could 12 months ever come first?
I mean, it's possible if you're retired and only drive to see the grandkids on weekends and they live 50 miles away.
Change the oil and filter every 7,500 miles (12 500 km) or 12 months — whichever occurs first. (Of course this is permitted when the car experiences mostly HWY driving.)
That's still oddly worded. How could someone (as in likely to) accumulate only 7500 miles in a year doing mostly highway mileage? How could 12 months ever come first?
I mean, it's possible if you're retired and only drive to see the grandkids on weekends and they live 50 miles away.
Originally Posted By: Gary Allan
Quote:
Change the oil and filter every 7,500 miles (12 500 km) or 12 months — whichever occurs first. (Of course this is permitted when the car experiences mostly HWY driving.)
That's still oddly worded. How could someone (as in likely to) accumulate only 7500 miles in a year doing mostly highway mileage? How could 12 months ever come first?
I mean, it's possible if you're retired and only drive to see the grandkids on weekends and they live 50 miles away.
Gary, you realize that the part in non italics are my words i.e. (Of course this is permitted when the car experiences mostly HWY driving.)
The 3 month/3k miles is required if the car experiences any of these scenarios (I am paraphrasing from the manual):
So I think all that has been omitted is HWY driving? And yes I can't envision many/any real life scenarios that would have the 12 months come first. So the 'best' one can get in terms of a warranty approved OCI is 7500 miles...that is a long time on dino.
Quote:
Change the oil and filter every 7,500 miles (12 500 km) or 12 months — whichever occurs first. (Of course this is permitted when the car experiences mostly HWY driving.)
That's still oddly worded. How could someone (as in likely to) accumulate only 7500 miles in a year doing mostly highway mileage? How could 12 months ever come first?
I mean, it's possible if you're retired and only drive to see the grandkids on weekends and they live 50 miles away.
Gary, you realize that the part in non italics are my words i.e. (Of course this is permitted when the car experiences mostly HWY driving.)
The 3 month/3k miles is required if the car experiences any of these scenarios (I am paraphrasing from the manual):
- most trips are less than 5 miles
- most trips involve extensive idling
- tow a trailer or have a carrier on top
- the vehicle is used for a commerical application
So I think all that has been omitted is HWY driving? And yes I can't envision many/any real life scenarios that would have the 12 months come first. So the 'best' one can get in terms of a warranty approved OCI is 7500 miles...that is a long time on dino.
Why limit to 12 months? My last change in the Honda was 19 months and about 7K miles on a nothing-all-that-special oil that coulda gone farther. You can see the report here;
Honda used oil analysis
I will have results this fall on two farm tractors with 24+ month OCIs. I tested thm at a year and they were fine. We'll see how they did at two years. I may get 36 months out of a pickup. It's approaching 3K miles and has just reached 24 months. When it hits 3K I will sample to see how it's doing.
My point is that I don't think arbitrary time limits are all that important to lubricant life. The additive packages in the oils are too good now. There are isolated circumstances where a time limit should be regarded, but for most vehicles operated by the general public, I don't think they have much of a place.
That is, when looking at it strictly from a lubricant standpoint. For those people who never lift the hoods of their cars nor check tire pressure, the time limits have some value for obvious reasons. Mostly to save them from themselves.
Honda used oil analysis
I will have results this fall on two farm tractors with 24+ month OCIs. I tested thm at a year and they were fine. We'll see how they did at two years. I may get 36 months out of a pickup. It's approaching 3K miles and has just reached 24 months. When it hits 3K I will sample to see how it's doing.
My point is that I don't think arbitrary time limits are all that important to lubricant life. The additive packages in the oils are too good now. There are isolated circumstances where a time limit should be regarded, but for most vehicles operated by the general public, I don't think they have much of a place.
That is, when looking at it strictly from a lubricant standpoint. For those people who never lift the hoods of their cars nor check tire pressure, the time limits have some value for obvious reasons. Mostly to save them from themselves.
Originally Posted By: Jim Allen
Why limit to 12 months?
Only because of possible warranty issues.
Why limit to 12 months?
Only because of possible warranty issues.
Originally Posted By: bubbatime
Probably because they don't make a diesel/HDEO 5w30 (that I know of)
I believe I've seen a diesel 5w30 by Castrol that might be a synthetic blend IIRC
Probably because they don't make a diesel/HDEO 5w30 (that I know of)
I believe I've seen a diesel 5w30 by Castrol that might be a synthetic blend IIRC
Originally Posted By: Jim Allen
True. Musta missed something. I guessed the '06 Corolla we were talking about was out of warranty.
I think the thread got a little bit astray.
My 05 Vibe has an extended warranty which will likely expire spring 2010. My most recent OCI was 6 months and about 4000 miles and it was not HWY miles (UOA just fine) so I know I have strayed from GM's letter of the law.
True. Musta missed something. I guessed the '06 Corolla we were talking about was out of warranty.
I think the thread got a little bit astray.
My 05 Vibe has an extended warranty which will likely expire spring 2010. My most recent OCI was 6 months and about 4000 miles and it was not HWY miles (UOA just fine) so I know I have strayed from GM's letter of the law.
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