Need an engine for my 2008

Chuck Norris requires no engine oil as he has no need for a truck. He runs down the highway on foot at 55 all day long. And if you cut him off, he's gonna put you into the wall.

 

Half would be 3 quarts??????

On 1GR-FE, OEM from the factory, it requires 6 quarts.

Approx 1/2 quart stays in the engine once used, in the nooks and crannies and stuck to parts for lubrication. After that approx 1/4 qt at any time is actually circulating and draining through the engine at any given time.

I guess... If you replaced the Toyota mechanical oil pump that puts out about 30-50psi when bone cold then about 10-12psi at running temp with like an electric oil pump putting out about 100psi constant you could in theory pump 3 quarts into the engine, but I'd have to do more test to see how much that would starve the pickup under different running conditions. And also sludging effects having that much oil standing on high heat areas of the engine??

 

1/4 quart is one cup! The engine is being lubricated by one cup of oil while the other 23 cups sit in the pan? Highly dubious. Where did you get that information?

 

Not really, besides the 1/4 quart in the passages and journals at one time, there is about an extra 1/4 quart that is in the process of draining to the pan. So, Yah, my bad, your kinda right. Sorry about that.

You can test this pretty easily if you want to.

Install a new 1GR-FE. Add 6 quarts of oil. Run it for few hundred miles. Check oil level. Should be right on the money.

Now, run the truck as hard as you want to, hurry home, jump out and pull the oil plug and drain the oil until it starts to drip.

Between the oil that drains out and the oil in the filter 5.0 quarts will come out.

Replace that oil that EXACT amount you just drained.

Go run it hard or whatever.

Park it for the night.

Drain the oil in the morning and change the filter. Approx oil that is removed is 5.25 quarts.



Following yet?

OK let's do worst case scenario. You hurry home, drain the oil to change it and change the filter. You drained 5 quarts. Remember, you have about 1/2 quart that stays in the engine, about 1/4 quart in the journals and passages, and about 1/4 quart that's still in the process of trickling down. Since you think the more oil the better, let's add 6 quarts!

So Now, your at 7 quarts of oil. If you don't change the filter, even a tad more.

Sooooo.......

Over filled by 1 quart on an oil change would put 6.5 quarts in the pan (the level I used in the tests) putting the oil level very close to the crank. As someone else pointed out, you also have to factor in when you hit bumps and what not.

In any case, I'm done with this. The tolerances in these engines are very precise. Put as much oil as you want to, let me know how it works out.

 

What tests I have not seen any scientific data to back up any of your claims of foaming etc.

Now I do agree with you assessment of oil left in the block after shut down. I actually had a customer we let the oil drain all night to get a lot of the old dirty oil out and there is quite a bit in every engine how much it all depends but it seems like you are stating a hypothetical, did you actually measure any of this or are just shooting from the hip still.

You do realize that a manufacturers recc. for refill on an oil change takes the oil that didn't drain completely out into account right? You know because they have engineers and scientist that actually do testing and calculate this stuff out and publish the data.

The tolerance in every car engine is very precise you ever build one? The tolerances in a race engine are actually looser than in a daily driver you ever build one of those? I use to race with a 30000 engine sitting under the hood and it was a lot looser than any factory engine.

Where do you get your info it has nothing to do with the pump changing the pressure but the weight of the oil changing to get the different pressures hot and cold as well as just the way oil acts at different temps even an electric pump will do this. I think I'll send you all of my books, training manuals, etc on this stuff so you can read and learn from the industry and not Wikipedia.

I still haven't seen any empirical data or test procedures or theory to back up what you are claiming.