Anyone using an oil other than 0w20?

not always the case!
example tyres,,,,,,,there are test that have been done on ccvt gearbox oil,,,,,,!!
aslso test available on oils!!
different places..different ambient temp....weather

makers are seeking best compromise...usually cant go WRONG their recomendations.....but not necessary the BEST!

 

Definitely Toyota full synthetic.

 

first 30,000km i used mobil 1- 5w30 , then switched to the Castrol EDGE 0W-30 A5 hope both oils are good don't know what is the best ,now odo at 60000 ,but i noticed mobil 1 gave me 2 or 3 km more per liter.

 

We're not talking about tires here...that's more a personal preference concern, while recommended engine oil is 0w20 which provides best protection within a wide temperature range...apples to apples?

 

While I still use it, the jury is still out on whether 0w20 "provides best protection", but it hasn't hurt yet.

 

Well then it would seem to me that Mobil 1 is a bit "slicker"? Why did you stop using it?

RAL

 

The Dude said: ↑

Why in the world would you not use the best recommended by the MAKERS of the car??? lol? good luck with that.​

not always the case!
example tyres,,,,,,,there are test that have been done on ccvt gearbox oil,,,,,,!!
aslso test available on oils!!
different places..different ambient temp....weather

makers are seeking best compromise...usually cant go WRONG their recomendations.....but not necessary the BEST!​

Read more: http://priuschat.com/threads/anyone-using-an-oil-other-than-0w20.118532/page-4#ixzz2Py3Egql8
I'm still not doing the quote thing correctly....
But all this talk about the 'Car Makers' intentions,,, makes me want to ask these guys their thoughts on the 'Makers' recommendation on transaxle maintenance. (One of my favorite subjects...)

 

Yep,,, so many strong opinions on this simple, testable subject. $15 oil analysis.
So what about Mobil 1 'Extended Service' oil and Amzoil claims about 25 k oil changes?
No Opinions Needed. There is testing available.

Side Note: I have a bank courier buddy with 310k on a Gen2. Before that an Accord wagon that was retired at 1.4 Million Miles, no major engine work on either. He will do 20-25k oil changes in the summer months and gauges it simply on the look of the oil.
I know in my Gen3 at 5k with M1 0-20w, it looks less dark than very weak tea. There is absolutely no reason to change the oil at 5k intervals, IMHO. And this was during the winter months.
But, as I said, no opinions needed. This can be tested.

 

Oops, I got off topic. Sorry.
Fuel mileage changes with air temperature. Does running oil temp change that much from hot to cold air temps?
After reading about the Aussie recommendations, I think I'll be using something thicker in the summer months.

 

thought castrol edge professional is better than mobil 1 when it comes to engine wear protection

 

Where do all these thoughts come from? Actual third party testing?

I will volunteer my car for testing M1 Extended Performance 10-30W, (or whatever is the lowest viscosity version available) for a 20K mile oil change interval.
And have an analysis done at the end.
Are there any Doomsday or Fuel Mileage predictions?

 

Bill, although my "opinion" is contrary to what you propose, I would be interested to see the results...since my vehicle is not the test subject. Mobil 1 Extended comes in 5w20, 5w30, 10w30 and the recommended change cycle is 15,000 miles or 1 year, which ever comes first. If the car mfg. recommends changes beyond 15,000, and M1E meets their spec, they claim to protect to that as well. You willingness to experiment with your ride is surprising since your last odometer I saw posted was 112,000.

The analysis of your ATF @112K confirmed data already compiled on this site and other places, and I commend you for that. But had you not purchased the vehicle at 108,000, would you have waited that long to make the point. Your going the other way with the motor oil thing almost seems contrary to your previous point and belief in PM.

All data as it applies to the subject is good, but if you are going to do this, at least stay within the change cycle given by Mobil, or what ever oil you do choose. Respectfully, that's the Mechanic in me talking.

 

Frodo,
You talked me into it! 15k it is on Mobil 1 Extended Perf 5-20w!!
And I'll do an analysis at the end. Currently I'm getting way over 8k per qt. of oil, so my engine is still fresh.
I've read a quite few articles that talk about 3-5k oil changes as "Throwing away good oil".
It's a Green Thing not to change your oil before its time.
An oil analysis at 5k would be informative. (Of course which season and time in service would affect the 5k analysis.)

It's my bank courier buddy that can pull off 20-25k changes with his Gen2.
He drives ~500 miles at one setting and really racks up the miles. It's easy duty for a car and its oil, no?

My poor transaxle I blame on Toyota's maintenance recommendations.
I'll be posting the analysis results of running Mobil 1 ATF for 5k in a week or so.
Hopefully the 'metal making' has stopped.

 

About 1/4 to 1/2 as much as outside air temperature variation if the car doesn't have an oil cooler based on a report I read years ago. The engine coolant moderates engine head and block temperature to a large extent and that has a moderating influence on oil temperature.

An oil temperature gauge is a good addition if you are going to fine tune oil grades.

 

Toyota says 10K, M1E says 15K or 1 year, which ever is first. I still think this experiment is contrary to good PM.

There will still be "metal" after 5K on the ATF but remember, the initial break-in has a higher %, plus the 112K miles. So unless you have really bad wear already, the count should be low. Your cause there is with the "Toyota WS is best" people. I still believe frequent change cycles is the key to longevity with modern fluids.

 

Frodo says, "I still believe frequent change cycles is the key to longevity with modern fluids."

Modern fluids allow less frequent changes, or so they claim.
Not scientific but my high-mileage record-setting buddy kind of proves this.
It's the condition of the fluid, not the strict number of miles traveled.

Alas, only time will tell....

And with the 'Which ATF is the best" question, that will / can never be answered.
I just want my simple gearbox to start showing somewhat normal oil analyses....

 

Anybody try the 5w-20? Costco sells M1 in this viscosity for about $25 a case. I've used full synthetic and synthetic blend Motorcraft 5w-20 in almost all of my vehicles with zero issues. I don't see much difference between 0w-20 and 5w-20. Motorcraft oils are very good and rated high in BITOG tests. I did use M1 0w-20 as recommended for my 1st oil change a few weeks ago and I hit the magic 50 mpg.

 

Will your engine seize up? Nope but the 0w will flow better at cold start, the time period that accounts for the lions share of engine wear. So the 0w should cut down on that wear compared to the 5w. Is it enough to make much real world difference. The 0w should give better MPG too. Here is an interesting oil site. Yes they do promote their product but there is a lot of basic oil data to be mined here.
Motor Oil Viscosity - importantance of

RAL

 

If you starting your car in sub 0F weather, then 0W starts to have real advantage over 5W. In more reasonable temperatures, you might be able to detect a difference in fuel economy if you keep careful records and drive very consistently or are subject to placebo effects.

 

My fuel mileage tracks the average temperatures , up and down.
I like to think I drive consistently. It's impossible to get consistent MPG with temps and winds always different.

If Crazed switched from 0-20w to 5-20w and the average temp jumps from 45° to 70°, ( Yay, spring is here!!),
he would then see an amazing jump in MPG. But you can't say it was from increasing the viscosity.
That's what will happen when I switch to M1 Ext. Perf. 5-20w. I'll start seeing better MPG.
It will be warmer, to hottest, during this 15k mile oil cycle.
I plan on doing it at 120k miles to make record keeping easy. And I'll do an analysis at 135k miles.
If all tests well, I would then use petro resources and be on my back under the car 50% less.