10w Temperature

... this 10/30 is going in something. I won't let it go to waste.....be it one of my vehicles, my mower ...
My old lawnmower says to use straight weight oil with no viscosity improvers (not labeled "energy conserving").
 
In many cases personal choice for oil viscosity is not made with the same thinking the engineers use during design. Engineers can very commonly be pressured into developing and assigning viscosity to meet growing demand for fuel efficiency, not particularly health of the engine overall. Whether or not engine longevity in terms of oil Viscosity is a limiting factor is another topic. But this is not always a “smarter than the engineers” argument. Unless you’re way up north it won’t make a massive difference but I stand with the save it for spring and don’t fret at all stance.
 
I would either wait for warm weather, or use it in the highest mileage, most worn engine, with preferably a good starter and newer battery to get it running, don’t beat on it for the first mile or two. Warren 10W30 (Super Tech?) is likely a straight conventional, so if it gets REALLY cold, like -20F, it might not start well (without noise).
 
My old lawnmower says to use straight weight oil with no viscosity improvers (not labeled "energy conserving").
My mower officially calls for 5/30 synthetic. It's got a ton hours on it and had begun to use oil and smoke a couple of years ago....despite 2 seasonal OCs with a quality syn and checking the level before each mowing.

So I started dumping all my leftover oil from various OCs into an old Valoline jug. It's a mixure of conventional and synthetic with weights ranging from 0/20 to 10/40.

That is my lawnmower and pressure washer oil. Zero issues. In fact, a couple of OCs with some Restore added as stopped the mower's oil consumption all together. Both engines run great on the Frankenstein mixture. I did recently bolster that mixture with a quart of Valvoline 10/40 Maxlife that my neighbor had for $1 at his garage sale. He gave it to me free. 😁

I'm never going to buy mower oil again. These small engines seem just fine with running whatever is laying around....and I've always got some oil to add to the "mixture".
 
I would either wait for warm weather, or use it in the highest mileage, most worn engine, with preferably a good starter and newer battery to get it running, don’t beat on it for the first mile or two. Warren 10W30 (Super Tech?) is likely a straight conventional, so if it gets REALLY cold, like -20F, it might not start well (without noise).
Meijer house brand.....but a Warren product.
 
Generally speaking....is there really a big difference in startup protection between 5/30 and 10/30?

From what I can gather....5w is around -45F and 10w is about -39F. Both of those temps are well below anything we see around here. We see single digit temps here and there. But our winters are generally teens to low 30s at night.

If I used a 10w oil would I be giving up enough protection to warrant any concern?
What part of the US are you located?
 
Unless you’re located in artic temps. The only difference that may be noticeable is mpg.
Slightly better fuel economy with the 5w30
 
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Back in Dec. '89 there was a really cold snap here that lasted a few days. I had 10w40 in my vehicle when the actual temperature dropped to -28F and wind chills at -56F if I recall correctly. The engine turned over a bit slow but, no obvious damage was done.
 
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If you don't go below zero 10W is fine. the older the vehicle the better. It will go in clean and come out dark like any other oil.

Standard oci. no different wear to worry about or celebrate. Just dump it and run. I have SAE30HD in my 07 tacoma now. :)

coming up on 5k miles same-same.
 
Where you live, this is like splitting hairs. 10W should not make a difference. I live in Minnesota, so I run 5W or 0W. But when I started driving in the 1970's, 5 or 10W conventional was pretty much all we had.
 
Well my feeling is it going rot before next spring. How often do you change oil or are they going to charge you for it if you don't use it now?
It's only a few months old. I wouldn't think it's status would change much in the next 6 months or so. I'll just give it a good shake before use.

I'm just going to hang on to it for now. Something will pop up at some point that will need some oil. If nothing else it will be perfect for some of the "charity changes" I do.

And sorry....not sure I understand your question.
 
It's only a few months old. I wouldn't think it's status would change much in the next 6 months or so. I'll just give it a good shake before use.

I'm just going to hang on to it for now. Something will pop up at some point that will need some oil. If nothing else it will be perfect for some of the "charity changes" I do.

And sorry....not sure I understand your question.


I thought it was clear.

Oklahoma. ♻️
 
It's only a few months old. I wouldn't think it's status would change much in the next 6 months or so. I'll just give it a good shake before use.
All the oil I'm using in my vehicles I'm pretty sure is between 15 and 25 years old and still have somewhere around 10 cases of it. Years ago when oil was cheap I'd often buy several cases at a time for prices of $ .50-$ .89 a quart. Before I got hurt and had to go on disability I usually drove 35-40K miles a year so I went through quite a bit of oil. I worked construction and was always driving on dusty construction sites so at the time I usually did 3K mile intervals. I got hurt in 2000 and since then I only drive somewhere around 20K miles per year and do 5K-7.5K OCI's. At my current age I'm pretty sure there will be oil left for others to use when I'm dead and gone. I was in the garage yesterday and was looking at some of the oil bottles and noticed some was API SJ so this gives you an indication of how long it's been in my garage. I'm still using Exxon Superflo in my '97 Ford Escort that I had when I bought the car new. The oil I'm using in my '16 Versa is some of my newer oil, Citgo Supergard 10w40 that I bought probably somewhere between 2000-05 at a Dollar General Store grand opening at 2 qts/$1. The oil I'm using in my mom's '99 Grand Marquis is some Amoco that dad had when he died in 2010. I got married in 1990 and I don't remember seeing any Amoco in that type bottle since before I got married. As a matter of fact I remember using that same oil in a Chrysler I had in the '80's.
 
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All the oil I'm using in my vehicles I'm pretty sure is between 15 and 25 years old and still have somewhere around 10 cases of it. Years ago when oil was cheap I'd often buy several cases at a time for prices of $ .50-$ .89 a quart. Before I got hurt and had to go on disability I usually drove 35-40K miles a year so I went through quite a bit of oil. I worked construction and was always driving on dusty construction sites so at the time I usually did 3K mile intervals. I got hurt in 2000 and since then I only drive somewhere around 20K miles per year and do 5K-7.5K OCI's. At my current age I'm pretty sure there will be oil left for others to use when I'm dead and gone. I was in the garage yesterday and was looking at some of the oil bottles and noticed some was API SJ so this gives you an indication of how long it's been in my garage. I'm still using Exxon Superflo in my '97 Ford Escort that I had when I bought the car new. The oil I'm using in my '16 Versa is some of my newer oil, Citgo Supergard 10w40 that I bought probably somewhere between 2000-05 at a Dollar General Store grand opening at 2 qts/$1. The oil I'm using in my mom's '99 Grand Marquis is some Amoco that dad had when he died in 2010. I got married in 1990 and I don't remember seeing any Amoco in that type bottle since before I got married. As a matter of fact I remember using that same oil in a Chrysler I had in the '80's.
I remember the Amoco selling in Kmart 35 or so years ago for $.88 a quart when Pennzoil was a buck and a quarter. I stuck with the Pennzoil.
 
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