Just curious...what do you guys think? Talking long term use here...
also curious as to how this oil is reported to protect timing chains?
also curious as to how this oil is reported to protect timing chains?
any danger of m1 ow40 poisoning cats?
- Thread starter Doublehaul
- Start date
- Status
If it was a big deal or had any basis in something other than old wives' tales, Europe would have had millions of failed cats by now, and the accompanying fanfare as well.
As long as your engine is healthy and not burning a quart per 500-1000 miles, it will be fine on both counts. M1 0W40 is a very highly certified, and therefore robust, choice. Use it with confidence.
As long as your engine is healthy and not burning a quart per 500-1000 miles, it will be fine on both counts. M1 0W40 is a very highly certified, and therefore robust, choice. Use it with confidence.
I wouldn't worry about the cats if you are not having to add a quart of oil per 5k. I have the same engines as you.. no oil addition has been needed in the many I have owned. (6 - 1 grand this one 2gr fks that has grown on me Over 13500 miles).
As for timing chain wear, it may not have the same exact additives of D1G2 (it is formulated to meet the lower ash requirements and protect timing chains and meet ILSAC low viscosity requirements)but it has higher levels of traditional AW additives and higher viscosity, both shouldprotect timing chains better. Even though I don't have a problem running 0w20 seasonally to use up the Toyota care oil Changes that were included in the vehicle price.
As for timing chain wear, it may not have the same exact additives of D1G2 (it is formulated to meet the lower ash requirements and protect timing chains and meet ILSAC low viscosity requirements)but it has higher levels of traditional AW additives and higher viscosity, both shouldprotect timing chains better. Even though I don't have a problem running 0w20 seasonally to use up the Toyota care oil Changes that were included in the vehicle price.
Last edited:
Heck I run Redline oil and have had no issue. As long as you ain't consuming a lot should be fine.
The 40 grades don't have the ash and P limits of the 30s...here's how it went down...
The OEMs started messing with low tension rings and the like to improve economy, then tried to justify 1 quart of oil per thousand miles (or less) as "normal" for a new engine, at the same time as having to have a catalytic converter live for the life of the car with 300 quarts of motor oil passing through it during it's lifetime.
So they pushed for lower levels in the "economy" grades of oil, while leaving the 40s unaffected.
If you are worried, get a C3, or Dexos 2 40...
The OEMs started messing with low tension rings and the like to improve economy, then tried to justify 1 quart of oil per thousand miles (or less) as "normal" for a new engine, at the same time as having to have a catalytic converter live for the life of the car with 300 quarts of motor oil passing through it during it's lifetime.
So they pushed for lower levels in the "economy" grades of oil, while leaving the 40s unaffected.
If you are worried, get a C3, or Dexos 2 40...
4WD
$50 site donor 2025
left some parts soaking in a bowl of gasoline and a cat started lapping it up ... did not last long
Originally Posted by dlundblad
A new car that requires 0w40 has catalytic converters.
Even old cars. My sig car has it right on the cap. Over 100k miles of hard usage with no cat failures or codes.
A new car that requires 0w40 has catalytic converters.
Even old cars. My sig car has it right on the cap. Over 100k miles of hard usage with no cat failures or codes.
I wouldn't lose a minute of sleep worrying about it.
Originally Posted by SubieRubyRoo
If it was a big deal or had any basis in something other than old wives' tales, Europe would have had millions of failed cats by now, and the accompanying fanfare as well.
As long as your engine is healthy and not burning a quart per 500-1000 miles, it will be fine on both counts. M1 0W40 is a very highly certified, and therefore robust, choice. Use it with confidence.
That about sums it up.
If it was a big deal or had any basis in something other than old wives' tales, Europe would have had millions of failed cats by now, and the accompanying fanfare as well.
As long as your engine is healthy and not burning a quart per 500-1000 miles, it will be fine on both counts. M1 0W40 is a very highly certified, and therefore robust, choice. Use it with confidence.
That about sums it up.
How much oil do you burn? If none or very little, you'll never poison the cat(s)
Quite certain that cats shouldn't drink motor oil, no matter the brand or viscosity. I doubt they'd take more than one lick of it though because it can't taste good. Besides, why leave it out and exposed where a cat could get to it to drink ?
/s
/s
We need to hear from someone who is in a jurisdiction where they need to get emmisions tests and they are using 0w40 oil. Anyone out there?
On the other hand, if the 0w40 is SN rated that would be enough for me. One such oil is Shell Rotella T6 0w40. Another is Mobil 1 Delvac ESP 0w40. For a 5w40, look at Mobil 1 Turbo Diesel Truck 5w40, or Mobil 1 Delvac ESP 5w40.
On the other hand, if the 0w40 is SN rated that would be enough for me. One such oil is Shell Rotella T6 0w40. Another is Mobil 1 Delvac ESP 0w40. For a 5w40, look at Mobil 1 Turbo Diesel Truck 5w40, or Mobil 1 Delvac ESP 5w40.
Last edited:
It will be fine
No but there's always hope if you put a little Tuna fish oil in it!
I've used more 0w40 than anything else in the last 10 years or so. I don't think they are any more poisonous than the average oil in other grades. M1 specifically is pretty good at following the latest spec and is reformulated frequently. So I would have no concern if I were you.
I'll agree with the consensus that you'll be fine as long as you're not burning massive amounts of oil. If you're really concerned, there is always Mobil 1 ESP Formula but I hardly ever see it in stores.
For what it's worth, my Explorer made it 230K+ miles without catalytic converter issues, even as it drank about a quart of oil every 250 miles (and would then foul Cylinder 1 spark plug to the point of misfire every 2-3K) for the last 20K I owned it, and I was usually topping it off with Valvoline MaxLife 20W-50.
For what it's worth, my Explorer made it 230K+ miles without catalytic converter issues, even as it drank about a quart of oil every 250 miles (and would then foul Cylinder 1 spark plug to the point of misfire every 2-3K) for the last 20K I owned it, and I was usually topping it off with Valvoline MaxLife 20W-50.
My work vehicles run Delvac 1 5w40 under severe use and it is not unusual to smoke cats. In my last two cars, an impala and a Ford Explorer, both cats were done before 100,000 miles, which by the way is usually covered under warranty.
Originally Posted by Doublehaul
Just curious...what do you guys think? Talking long term use here...
also curious as to how this oil is reported to protect timing chains?
My cat prefers conventional oil vs synthetic.
Just curious...what do you guys think? Talking long term use here...
also curious as to how this oil is reported to protect timing chains?
My cat prefers conventional oil vs synthetic.
- Status
Similar threads
