5w-30

[DENNISD]

Changed out the factory fill at 5k miles, at 27k miles… so far, so good….5W30 Napa Synthetic for the past 22k miles

Why would it not be okay? Heck, you could easily run a thicker oil and be fine with those low of miles.

Unless you are driving in hot conditions or pulling/hauling heavy loads, you are simply not getting the mileage that you could be getting running with a thinner oil.

It is as simple as that.

The only thing that I was pointing out earlier is to follow the owners manuals. The people on this forum that think they know better are guessing at best.

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[GSPHerder]

This wasnt meant to be whether you believe what American Manufactures handcuffed by CAFE standards are feeding you. The same manufactures that told you 10k oil changes. The same ones that recommend a 30w overseas.

There's vids posted on this thread that show how much better a 30w protects against friction vs a 20w. There's also lots of peeps showing how their 20w is being diluted by fuel which would lower the viscosity even lower then the 20w you think is running in your engines.

I remember sitting in a class with those same engineers and them telling us how the new Tacoma (3rd gen) is designed to run at high rpm's to get horsepower out of the engine. Same as that Toyota engineer that replied to TFL axle fiasco that its designed to self destruct where a subaru could of made it.

Instead this thread was meant to be for peeps running a 30w and sharing info and oil analysis. We'll make up our own minds after we see the engine wear, and not what some jackass wrote in a manual because the Govt forced him to.

 

[yerkool]

22k miles of using 5w30 and … so far, so good

I think if you stick to it OCI 5K miles that taco will make it to 200K miles plus.
5W30 seems to be the right combo. All ford trucks new and old are on 5W30.
You hear Fords being trash talk about cause it’s due to customer neglect and that’s any brand, any vehicle..

 

[GSPHerder]

Perfect example is the vid i posted earlier of the dude doing his 20k 4th gen review. Good Guy, good vid however he starts the vid off with why everyone needs to use 0-20. Then when he posts his oil analysis and its showing increased engine wear he blames it on "maybe his tires" Instead of the absolute most obvious. The oil he's using is not protecting the engine sufficiently.

So its not about what someone wrote or thinks, it needs to be validated by oil analysis's. So no matter what oil your using post them up and lets figure it as a community.

 

[DENNISD]

Perfect example is the vid i posted earlier of the dude doing his 20k 4th gen review. Good Guy, good vid however he starts the vid off with why everyone needs to use 0-20. Then when he posts his oil analysis and its showing increased engine wear he blames it on "maybe his tires" Instead of the absolute most obvious. The oil he's using is not protecting the engine sufficiently.

So its not about what someone wrote or thinks, it needs to be validated by oil analysis's. So no matter what oil your using post them up and lets figure it as a community.

I think oil analysis is useful, but we still have to be careful about drawing conclusions from a single report.


There are a lot of variables that can influence wear metals in a sample — driving style, trip length, engine load, fuel dilution, ambient temperature, dust, and even the sampling method itself. Because of that, it’s really hard to point to one result and say the viscosity was the cause.


To truly prove something like that you would need a controlled side-by-side test under identical conditions. Otherwise we’re mostly just interpreting trends.


Manufacturers like Toyota have already run thousands of hours of durability testing under many conditions before settling on the oil recommendations in the owner’s manual. While CAFE standards definitely influence the push toward thinner oils, the manufacturers also have to protect themselves from warranty claims. They wouldn’t recommend something that leads to widespread engine wear.


At the end of the day, most modern engines are very well engineered. Whether someone runs 0W-20 or goes slightly thicker, the engine will likely last a very long time. I think the bigger takeaway from oil analysis is simply making sure nothing abnormal is happening rather than trying to prove one viscosity is universally better than another.


Just my take on it.

 

[GSPHerder]

Dennisid, the idea is too compile some real data so we can learn from it and make adjustments. Not just one, but lots of people thru the years. Like I mentioned earlier the Power Wagon peeps have way over 100 pages on one thread and they have the oil thing dialed in pretty good.

Granted most people buy a Toyota so they can dump in Mobile 1 drive for 200k miles. I get it and that why Toyota has such loyal customers. Its well deserved.

Now then, there's a handful of peeps who love to nerd out on their trucks and want to see the real numbers. That's what I hope to start going here.

 

[OldmanTaco]

since I'm old, my message is going to be a story. When my 6th gen SS came out Chevy spec 30 weight oil, of course I'm not putting 30 weight (10 quarts BTW) in my road race car. so I ran 10-40 mobile one eurocar formula. Had a billion oil experts and complete paranoid warranty people claiming how it was going to ruin the engine, void the warranty bring about the end of times, yada yada. One year later when the SS - 1LE came out the GM build road race Camaro (exact same engine in everyway) GM spec.... you guessed it 40 weight and oh it gets better, a year later, gm spec 50 weight for race days and change it before you drive home... LOL. I know the Mayan calendar 6th baktun did not occur. For me I run a quality 30 weight.

There are naysayer and I've debated this topic for decades now so I give you one piece of further proof: GM has recalled over 1/2 MILLIION trucks, the recall consist of throwing away the fill with 20 weight oil cap and replacing it with a 40 weight oil cap. LOL can't make this stuff up. BTW the L86 engine long block is identical to the Camaro SS's engine the LT1 in EVERYWAY.

 

[GSPHerder]

I agree Oldman, just did first oil change at 1100 miles and dropped in some 5w-30. Big change in oil pressure which is consistent with every other vehicle I've had and changed to a heavier oil. 5k miles and we'll see what the oil analysis says. Interested to see where it sits after fuel dilution and 5k miles.

 

[BLtheP]

I agree Oldman, just did first oil change at 1100 miles and dropped in some 5w-30. Big change in oil pressure which is consistent with every other vehicle I've had and changed to a heavier oil. 5k miles and we'll see what the oil analysis says. Interested to see where it sits after fuel dilution and 5k miles.

You may want to further examine that. My findings are that even with 40 grade, pressure is basically the same in most conditions. That is because the variable displacement oil pump looks for certain pressure and it will do that no matter what viscosity is used.

 

[DENNISD]

You may want to further examine that. My findings are that even with 40 grade, pressure is basically the same in most conditions. That is because the variable displacement oil pump looks for certain pressure and it will do that no matter what viscosity is used.

I agree. If the oil pressure dropped I would be nervous. That is not typical unless the engine is worn. The kick in the ass would be that Toyota may blame a "defective" engine on not using the oil that is recommended.

Reason # 1,568 of why you should use what the manual states.

 

[GSPHerder]

You may want to further examine that. My findings are that even with 40 grade, pressure is basically the same in most conditions. That is because the variable displacement oil pump looks for certain pressure and it will do that no matter what viscosity is used.

According to the gauge the oil pressure at 2k rpm is one whole bar higher. I'm positive.

 

[DENNISD]

According to the gauge the oil pressure at 2k rpm is one whole bar higher. I'm positive.

Yes, and that is not necessarily a good thing to happen. I don't think he was doubting that your pressure did go up or down.

 

[GSPHerder]

All previous vehicles showed the same increase in pressure with a heavier oil, and the fact that a Tacoma 15min south of the border is engineered for a 30w doesn't cause me to have any concern. Perhaps the concern would be a lower pressure with a 20w designated for cafe standards.

 

[BLtheP]

I agree. If the oil pressure dropped I would be nervous. That is not typical unless the engine is worn. The kick in the ass would be that Toyota may blame a "defective" engine on not using the oil that is recommended.

Reason # 1,568 of why you should use what the manual states.

I think you’re misunderstanding. GSP is saying his pressure went up from the 5W-30. I said may want to check again because the variable oil pump generally keeps pressure about the same in all conditions because it is trying to meet specific pressures. So it opens up the flow to reduce the pressure to what it wants to see and it does that regardless of viscosity.

According to the gauge the oil pressure at 2k rpm is one whole bar higher. I'm positive.

That’s because you’re looking at a cold engine. Need to compare hot to hot. Trust me, I’m running a thicker oil than you and my pressure starts where yours does cold and then it’s much lower when warm, unless revving 2000 rpm or more.

All previous vehicles showed the same increase in pressure with a heavier oil, and the fact that a Tacoma 15min south of the border is engineered for a 30w doesn't cause me to have any concern. Perhaps the concern would be a lower pressure with a 20w designated for cafe standards.

Yeah see this is cold behavior. When warmed up it’ll go down into the second bar at idle and way up to just at the 3/4 mark when revving. It goes into the 4th bar only when cold. So there is probably a small increase when cold but when it warms up the pump will keep pressure exactly where it was with the warmed up 0W-20.

 

[GSPHerder]

Yeah see this is cold behavior. When warmed up it’ll go down into the second bar at idle and way up to just at the 3/4 mark when revving. It goes into the 4th bar only when cold. So there is probably a small increase when cold but when it warms up the pump will keep pressure exactly where it was with the warmed up 0W-20.

I understand what you're saying but Im thinking its still much higher after reaching temp, Ill check on next go around.

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