oil overfill for track

[bribri]

I heard that it's good practice to slightly over fill the engine oil so the oil level won't be too low in corners due to centrifugal forces. Is this correct? Can the engine have a oil pressure drop because of this? How much extra oil might help?

[soloecho2]

I would say NO. On the tracks we are running the corners are too short to slosh the oil away from the pick up. It could happen in looooong sweeping corners. I don't know the set up of our oilpan but excessive oil can cause a decease in HP because the crank has to push the oil out of the way.

[ozmdd]

Based on our oilpan orientation, I'd say that oil starvation is unlikely. Its not at all liek the V8 RWD oilpans, and our engine tolerances are so much tighter that I'd be very cautious about doing non-spec thinks inside out motors.

[bribri]

Thanks.

[mikenacarato]

ive always put in 4 qts. manual says 3.8 but 4 wont hurt.

[Lafiro]

Whats with the fighting? If the manual stated 3.8quarts. Then that should be the sweet spot. I myself put in 3.5, only because someone told me slightly below the full marker is better then filing it to the max or more.

I also asked a few people about this, and they also told me to NEVER fill up more oil then needed in the motor, and especially not in the transmission either. It will either cause HP loss, or damage.

Thats what I was told myself, as for the proof, I don't have any but to listen to people in the business itself.

So everyone is right and wrong in every opinion. But honestly, I will have to also say, don't overfill, leave that .2 to .4 quarts for the next oil change, you will be saving yourself a little money in the LONG run. And who knows about the engine.

[rob323]

Rather than bickering about it, has anyone even bothered to let their engine sit for an hour, fill it up to exactly the full mark on the dip stick, then start the engine and let it idle for a minute of two and then shut it off and immediately check the oil level to see how much oil is actually still contained in the galleries of the motor and on the inside of the block and hasn't yet managed to return to the sump?

After a hard fang in my old rally car, you could pull the dipstick and have no oil what so ever showing on it, but give it 5 minutes, and it would be back up to the full mark.

[Tamago]

supmet, talk to 2zzge owners about the virtues of under-filling your oil pan at the track, and get back to us.

[AlexNet0]

ive always put in 4 qts. manual says 3.8 but 4 wont hurt.

thats been my routine. no problems

[mikenacarato]

well aparently alex, were wrong...this is why i dont come to this forum much anymore because everything anyone does is wrong and someone else is right. way to let YW slide down the hill people.

[rob323]

I would have thought there were more people agreeing with you (me included) than against you.

[supmet]

supmet, talk to 2zzge owners about the virtues of under-filling your oil pan at the track, and get back to us.

There is a difference between overfilling for the track, and saying it won't do anything bad at all. Doing it at the track is the lesser of two evils. Doing it all the time for the one time in your life you might hit a turn for hard and long enough to starve your engine, just doesn't make any sense.

Please explain why, if I'm wrong, the manual doesn't say put 3.7 to 4.0 liters. Explain why there are thousands of google hits talking about the bad effects of overfilling oil, and the damage it does.

[mikenacarato]

well some people on here just need to learn some stuff, thats all.

mine is always at 4 qts wether im at the track or on the street. hasnt hurt anything now and from my past experiences, it wont hurt anything later.

by the way...liters and quarts are not the same thing supmet... 4liters = 4.2 qts, whereas im not putting in 4 liters...im putting in 4qts. i still have yet to find a place that states .2 qts of fluid will damage anythin0g.

another thing, dont leave that .2 or .4 qts for later...because by the time that later comes..the oil has broken down and becomes useless. same goes with open bottles of brake fluid, trans fluid, and really any oil based lubricant non aresol based.

[bribri]

sorry I asked
End of thread

[soloecho2]

That will learn ya. Ha Ha Ha. See you next Monday

[mikenacarato]

why should you be sorry? you asked a legitamate question and the people who dont even track their cars piped in to give no knowledge whatsoever.

[JumpmanYaris]

lol, he is a mechanic now, dude 4 qt wont do jack to ur car its ok its going to be OK

[Lafiro]

Alright, so I guess I should dump the remainder of the 4th quart into my motor then, since I openned the bottle....
Also, my response had nothing to do with the track vs street btw.

[mikenacarato]

just recycle it with your used oil since you dont wanna put it in.

[JumpmanYaris]

Alright, so I guess I should dump the remainder of the 4th quart into my motor then, since I openned the bottle....
Also, my response had nothing to do with the track vs street btw.

dude your car is going to be fine, some ppl are just to paranoid

[mikenacarato]

you car wont even show that .2 on the dipstick. plus i bet cars burn more than .2 qts between changes anyways.

[JumpmanYaris]

you car wont even show that .2 on the dipstick. plus i bet cars burn more than .2 qts between changes anyways.

yup, i bet my rims it does burn more lol

[supmet]

read the fking title of the thread

... read the posts. Shouldn't you be throwing a fit and telling everyone you're gonna quit YW again by now?

thats been my routine. no problems

ive been running 1 whole gallon of oil for the last 20k miles... .

ive always put in 4 qts. manual says 3.8 but 4 wont hurt.

[ozmdd]

I suspect that Toyota realizes that most consumers are not careful enough to measure out their oil to the tenth of a qt or L, and most often round to the nearest whole unit. I also suspect that they design their cars with some margin for error, so that a 2 or 3 tenths overfill doesn't destroy the engine. I wouldn't recommend intentionally overfilling by a significant margin, but I think it stands to reason that a small overfill is safe. Isn't that why they put a RANGE on the dipstick?

[mikenacarato]

that is correct ozmdd.

[supmet]

I suspect that Toyota realizes that most consumers are not careful enough to measure out their oil to the tenth of a qt or L, and most often round to the nearest whole unit. I also suspect that they design their cars with some margin for error, so that a 2 or 3 tenths overfill doesn't destroy the engine. I wouldn't recommend intentionally overfilling by a significant margin, but I think it stands to reason that a small overfill is safe. Isn't that why they put a RANGE on the dipstick?

3 tenths when you only have 37 tenths, is 8% too much oil.

The Range on the dipstick is there, because you can safely run with LESS than 3.7, not more :rolleyes:

I wouldn't recommend intentionally overfilling by a significant margin,

That is my only point..... almost a tenth isn't a significant margin?

I think I've gone as far in this thread as I can. If you guys can't read the thousands of hits on google, talk to any mechanic, or simply read the manual, I'm obviously not gonna change anyone's mind here. It is your car, do with it what you want.

On a side note, I would LOVE to see some video of a yaris taking a turn that is hard and long enough to starve it for oil.

[Tamago]

and i would LOVE to see a video of a toyota yaris with 4 quarts of oil exploding into a thousand pieces because of that extra 9.6 OUNCES of oil in it.

[supmet]

^^ don't care enough to respond.

So, I guess you guys are gonna be letting the toyota engineers they are wrong huh? I mean, if 4 qts does NO damage to the engine whatsoever, and 3.7 qts can starve your engine of oil, they really should change all the manuals to say put 4.0 qts in, since it ONLY can help, and CAN'T do any damage

unsubscribed

[ozmdd]

^^ don't care enough to respond.

So, I guess you guys are gonna be letting the toyota engineers they are wrong huh? I mean, if 4 qts does NO damage to the engine whatsoever, and 3.7 qts can starve your engine of oil, they really should change all the manuals to say put 4.0 qts in, since it ONLY can help, and CAN'T do any damage

unsubscribed

Uh...you did respond.

[mikenacarato]

i also find it funny that the extra 2 tenths of oil will damage my engine....wheres the damage now? ive been doing this for 20k miles...

[tomato]

I hate to interrupt all that fun, but it looks like a TIME-OUT is in order... (sigh)...


UPDATE:

OK, we're back. Let's try this again, and maybe this time we can have some answers / ideas / opinions without all the fighting? :biggrin:

[mikenacarato]

well like i said...my answer to the OPs question based upon REAL experiences is that 1 whole gallon of fluid will not hurt your motor.

[tomato]

You've already made your point, Mike :biggrin:

[supmet]

i also find it funny that the extra 2 tenths of oil will damage my engine....wheres the damage now? ive been doing this for 20k miles...

3 tenths. threeeeeeee tenths.

[tomato]

OK, I guess I shouldn't have reopened the thread so soon. My bad.

[mikenacarato]

its things like this that make me not post anymore.

[tomato]

Feel free to post your opinions, but no personal attacks or flamebaiting please.

[RHDVIPbB]

I do a full 4 quarts. You have to take into account the oil filter and temperature. A little bit does burn off between changes. I would rather have a small amount of oil than too little of oil.

[ozmdd]

I like to take one tenth of each of the 4 quart bottles and hire strippers to rub it all over me in my driveway. Its a little bit of extra work, but I no longer worry about overfilling before track days.

[mikenacarato]

how long have you been doing this and what results have you had? give us some history...apparently my 20k miles wasnt enough.

btw you gonna come to the IA fall meet? you better! :)

[mikenacarato]

I like to take one tenth of each of the 4 quart bottles and hire strippers to rub it all over me in my driveway. Its a little bit of extra work, but I no longer worry about overfilling before track days.

good thoughts except motor oil on the skin for long periods of time is harmful to your health. :biggrin:

like your train of thought though. :thumbup:

[RHDVIPbB]

Mike, I have done this to every car I have had. Even my 87 Conquest TSi. And that car had about 120k miles on it.

When is the fall meet? It was fun last year even in the cold.

[mikenacarato]

thanks for your info.

the fall meet is on the 25th of this month. i made a thread in the southeast section.