Toyota oil vs Mobil One oil

What "badmouthing?" I responded to Alfon's question with FACTS
and also related what the facts meant "in the real world".......some folks just have a very hard time with comprehension !

In the "real world", there is a significant difference between an oil with a VI of 170 and one with a VI of 216, along with the substantial difference in KV 40 cST spec. In the 'real world", it means the Toyota 0W20 will flow to the all important bearing and valve train components faster on both start-up and with the frequent start/stops of the Prius ICE.

In addition, the HTHS better relates to the operational viscosity
of an oil than the KV100 spec., and while the difference between a HTHS 0f 2.6 and 2.7 may be a just .1.......a 2.6 HTHS is considered a light 20 weight/grade oil, and 2.7 is considered a medium weight/grade 20 weight oil. In the "real world" the 2.6 relates to slightly better gas mileage.

For your additional edification, you don't have to "hammer" an engine
for it to benefit from a better oil. The Prius will benefit at ALL start-ups, cold or hot, and in the course of normal driving.

One more bit of information to the opinionated, but ill-informed.... Wal-Marts Supertech was made by XOM, not SOPUS
( Pennzoil ).

Yup ! Comparing speakers and oil...TRULY LAUGHABLE !!!

 

For your information, the goal of an HTHS test is to verify that the oil meets the necessary SAE specs for the grade oil it is being made.

In addition, higher HTHS specs than those specified by for an SAE grade oil anr NOT "better" as you seem to think. A 2.7 HTHS for a
2.6 sp'cd oil means it's OPERATIONAL VISCOSITY is higher, i.e...a thicker operational oil.

It appears that it would be you sir, that are off in knowledge of the topic, in great magnitude, and are bent on an erroneous direction !!

 

FYI......the "superior" Toyota 0W20 is manifactured to Toyota's formulation specs by XOM. It was formerly blended by Idemitsu
NOT Eneos.

The superiority of the Toyota 0w20 does not relate as much to gas mileage, as to faster flow on start-up and with the very frquent start/stops of the Prius ICE in operation.

There was absolutely no inference about "damage" or "destruction" of an engine using eitherthe M1 or Toyota 0W20 oil in my reply to Alfon. The information provided related to the 'real world" benefits of the Toyota 0W20 vs. the Mobil 1 0W20. Some folks just seem to have a hard time relating to facts and prefer unfactual and unknwledgeable opinion !

 

Sorry for the delayed response to your question. XOM ( Exxon Mobil ) currently manufactures the Toyota 0W20 synthetic oil to Toyotas specifications. It was formerly made by Idemitsu.

It bears absolutely no resemblance to the M1 OW20 which has been
verified by analysis. The only thing they have in common is that they are both 0W20 synthetic oils.

 

How much faster?

 

Wow, in the face of global warming, the winter temp in Mendham NJ is down to 18F? Now I am really glad I left.

Plus in this data intensive thread, the averge Dec and Jan temperatures in the area is in the high 20s.

 

Enough that the Toyota engineers chose to have an oil formulated
to meet their specific specs rather than accept what was available on the market. You might want to check with them.

 

Here's a Blackstone analysis of new Mobil 1 0W-20 done a couple of months ago. Note that the cST (viscosity) @ 100 C is 8.36, which is less than the quoted figure for the Toyota oil.

Does anyone have a similar analysis for new Toyota 0W-20?

 

Sorry for the late reply. Back when I was on Mobil and Toyota 0W20, I would get a tick or two at cold starts after about 6000-7000 miles from the valves/lifters. Now that I am using Amsoil, I haven't experience any of that. I did 10000K miles on my last 0W20, Blackstone told me to try another 1000 miles. They are expensive ($10 a quart, but it's worth it to not have to listen to the ticks)

 

Which Amsoil are you using? I've seen it down to $5ish/qt for the "OE" synthetic 0W20. If you're running their 25k/12 mon one, then yes, $10/qt is about right, once you factor in shipping.

I just did an oil change a weekend or two ago, and it came back OK per the analysis, other than some high fuel dilution. However, the engine had a chance to cool down and didn't have a full warm-up run prior to that. It happened with one other oil change I did, but when I did it will full warm up it was fine. The only other item they commented on was the oil was starting to oxidize.

The comments: Fuel is at a SIGNIFICANT LEVEL; FUEL DILUTION has caused viscosity to decrease SIGNIFICANTLY; Infrared results indicate beginning lube oxidation; Lube mixing possible due to change in additive levels; Lubricant and filter change acknowledged; Resample at half interval.

I do a lot of short (less than 5 miles) drives, so I really should have done the OC around 5000 miles vs 7500 miles. I will probably do 5k next time, and probably run the less expensive Amsoil to compensate some with the shorter changes.

 

:deadhorse:

 

Sorry, I don't understand?

 

LTRZ:

Am I correct in assuming that the M1 properties are from Mobil's data sheets and Toyota's are from analysis?

 

The most expensive one with a TRD filter, been using that combo for 3 changes now. I posted my original analysis somewhere, but basically it says everything was good except for a little shavings most likely due to a dirty air filter (I did have a 20K miles filter in there). My car does three 2 miles trip 4 days a week, the other 3 days is long highway drives of over 100 miles.

 

I agree there are certainly better oils than others and I myself get caught up in wanting to use the absolute best product. Then researching that product for the reassurance I am using the best product. Not to mention that because I take pride in my ownership of my vehicles, I do enjoy treating them with the best products available whether it be oil, wax, fuel, ect.....

With that said, for the length of time most of us will own these cars and the miles that we drive them, we will never see or experience any issues from not using the absolutle best oil available. There is more than one quality option available that will be an equally good choice for many individuals, for their length of ownership of the vehicle.

I'm sure I will get flammed for these comments

 

for some reasons, oil brand discussion is just like religion and leads to fights. I guess because there is no real evidence that one is better than other.

 

Exactly.

Just because a certain parameter can be measured ... and two oils have slightly different measurements ... does NOT translate into that making a damn bit of difference in any application in the REAL world.

Show me evidence of ONE vehicle ... ONE !!! .... that was scientifically tested ... that had a failure DIRECTLY attributable to using Mobil 1 (or ANY other) oil instead of the supposedly 'vastly superior' Toyota oil. When you can do that ... we'll talk ... until then ... you're just blowing smoke and imagining things.


REV

 

A I agree it leads to argument. Not just this thread and Prius Chat, but almost any and every Automotive Forum.

I do have an opinion but there are 3 areas I really hesitate to comment from experience. Oil grades and recommendations, Fuel quality and grades, and what or how one should clean and maintain their vehicle. Waxes and Polishes..

I think it's because all these area's are so owner controlled. They are very DIY. So everyone creates their own ritual that they believe in.

I've come to the conclusion that in most of these cases, I just stay out of it.

Change your oil, at least on schedule, fuel you vehicle with the recommended gasoline, and keep your vehicle as clean and presentable as you personally wish, using whatever tools you wish.

I feel confident I can recommend that without causing a fight. Any other specifics and people start taking offense.

 

The Electric Me -- I agree.

Stick with the schedule and use a weight within the specifications.


I had a neighbor that never washed his car -- ever ........ he leased them and I don't know how he could dive them some days .... and he would lease decent cars.

He would joking say -- I'm afraid they will get scratched.

 

Do the above any you'll be just fine .... and so will your Prius.

REV