Engine noise

Not sure if I'm loosing it but I swear I have valve train noise ever since changing my oil over to Pennzoil Ultra Platinum 0w20. Sounds like valve clatter? Changed oil at 8000kms from the factory fill Toyota oil. Truck has 10500 kms on it now. I may dump it and try another brand.

 

The manual calls for 0W-20. Not saying that’s the issue but it’s possible.

 

I changed over to Pennzoil 0w30 and it's actually nice an quite. I can barely hear any ticks.

 

I run 0-20 Pennzoil Platinum in my 17 CM, No issue.

 

I've ran a lot of brands of oil in my 19' CM . Some cheap , some higher end , 0w20 in the colder months and 5w30 in the warmer months , never any negative sounds , 5w30 sure runs quiet !

 

Is it louder when cold start? how about after fully warmed up?

 

Switch to a heavier oil and the noise goes away. I run 5w30. These engines are only spec-ed for 0w20 in the USA for emissions reasons. Same engine in the world wide Land Cruiser can run oil all they way up to 20w50. Obviously pic your oil based on climate though. Even the Mexican Tundra manual allowed for heavier oils. 0w20 is garbage.

 

If you prefer heaver oils, then great. Use what you wish. But the above statement is just plain stupid. All evidence has shown that 0w20 oil protects your engine as it is intended to do.

 

It also gets consumed and burned off much faster. Ive done real world testing with this, in my previous vehicle 0w20 would consume at the very least 1 quart before an oil change. I wont mess around putting that stuff in my tundra. Like you said you can run what ever you want to but you do have to wonder why the USA is the only country that Toyota says you have to use 0w20 in the 3UR-FE. Ive done extensive research on this and can post the pictures of Mexican owners manual as well as world wide land Cruiser manual with the same engine. The EPA and CAFE standards do not care about your engine. They just care about marginally increasing overall MPG.

 

Because experiences vary, you can't make blanket statements. For example, I have been running 0w20 for years and I don't burn a drop of oil between changes. I also have many UOA's that show outstanding protection for my rigs. I am not alone...BITOG has multiple users that show the same. But you don't see me saying that 5w30 is garbage, or that I have personal experience with 0w20, therefore your experience isn't valid.

I am well aware that other areas of the world use a heavier oil in the Tundra, that it is specd' for it even. You act as though it is a conspiracy, and that you are enlightening me to this information by informing me that 0w20 oil is only specd' here because of fuel efficiency...no kidding. That is exactly why. To do that they safely and to provide benefits, the oil industry created an oil that would serve the mpg needs but also protect the engine, which is exactly what 0w20 does. Test results are also showing the 0w16 oils are performing outstanding as well in other applications.

If you are set in your ways and stick to the old school specs, then great, but don't act as though those specs are better than newer specs when it has been proven that they are not.

 

Does the "W" mean weight?

 

Only to some, others not so much.

 

W means winter

 

Why

 

This will save some trouble. Check it out, 2019 5.7L Tundra owner's manual straight from Toyota of Mexico. Go to page 379

https://www.toyota.mx/sites/default/files/manuales/OM - Tundra - 2019.pdf

 

I use 5w-20 Penn Ultra Platinum, but this quad cam 5.7 sometimes sounds like a solid lifter Ford FE 427 big block; especially in a coffee drive thru.

 

Bearing clearances are designed to accommodate oil viscosity. I would assume an engine designed to use 20W50 would have .006" on mains where a 0w20 may have .003". I did some shade tree testing on a Roush 427 SR (stroked 351 to 427) I had a bad tick so I adjusted some valves while running. I removed the valve covers and witnessed oil flow. When I had the 20W50 in the engine the oil just flowed over the rocker arms, almost like syrup. The 10W30 rapidly drained through the rocker arms providing exponentially better lubrication. I don't want to coat components I want oil flowing through them. I would be very hesitant to use 20W50 in a Tundra engine. If you live in the South 5w30 would be the most I would feel comfortable using. I know when I changed my oil (hot) the 0w20 had the viscosity of rubbing alchol, it was THIN. It poured and splashed in the pan, what a mess, lol.

My engine oil temps easily ran 10F hotter with the 20W50. I talked to a Roush mechanic a couple times in troubleshooting my engine. He said tell everyone you use 20W50 if that makes you feel you have super hot race engine but use 10W30, lol!!!!

 

They're a lot tighter than that in the Tundra. #1 and #5 mains are about .0007-.0012 standard with service max .00197. #2,3,4 mains allow up to about .0023. Connecting rod bearings about .0010-.0027. Fascinatingly tight for tangless aluminum bearings.

 

I remember noting before that UR bearing clearances were tight, and specified out to the fifth place in service literature.

The link below is a good read on oil viscosity vs. bearing clearances. One thing I got from it was tight bearing clearances are necessary for using low viscosity oil, but I saw nothing saying high vis oil couldn't be used with tight bearing clearances.

https://blog.k1technologies.com/bea...hat most,wider clearances require thicker oil.

 

Good read. Their list seems to tie in with Toyota's recommendations. For aluminum block up to .0017 clearance and oil temp 160F-220F, 0w-20 or 5w-20; and for oil temp 220F+, 5w-30 or 10w-30. Even the U.S. owner's manual says a thicker oil (unspecified) may be needed under hard working conditions so there it is.

Interesting that engine gained 3.1 hp by switching to 0w-20 instead of 10w-30...

 

Wow!!!! That is tight clearances. I stick with 0-20 !!!

 

I wouldn't run 20w50 either i was just saying it is an accepted oil in the Land Cruiser 3UR-FE in very hot climates. I believe it was in the middle east when I was researching. I personally run 5w30, makes the tick go away.