oil overfill for track - Toyota Yaris Forums

bribri · 10-03-2009, 09:55 AM

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 · 10-03-2009, 03:00 PM

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 · 10-03-2009, 03:38 PM

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 · 10-03-2009, 08:11 PM

Thanks.

mikenacarato · 10-04-2009, 12:50 AM

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

Lafiro · 10-04-2009, 12:52 PM

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 · 10-04-2009, 07:15 PM

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 · 10-04-2009, 08:17 PM

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

AlexNet0 · 10-04-2009, 09:21 PM

Quote:

Originally Posted by mikenacarato

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

thats been my routine. no problems

mikenacarato · 10-04-2009, 10:51 PM

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 · 10-04-2009, 10:54 PM

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

supmet · 10-04-2009, 10:59 PM

Quote:

Originally Posted by Tamago

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 · 10-04-2009, 11:01 PM

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 · 10-04-2009, 11:43 PM

sorry I asked
End of thread

soloecho2 · 10-04-2009, 11:54 PM

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

mikenacarato · 10-04-2009, 11:55 PM

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 · 10-05-2009, 01:37 AM

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

Lafiro · 10-05-2009, 01:44 AM

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.

10-03-2009, 09:55 AM	#1
bribri Drives: white stock yris Join Date: May 2009 Location: Barrie, Ontario, Canada Posts: 47	oil overfill for track 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?

10-04-2009, 11:01 PM	#13
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	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. Last edited by mikenacarato; 10-04-2009 at 11:22 PM.

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10-03-2009, 03:00 PM	#2
soloecho2 Drives: 2004 Echo HB Join Date: Oct 2008 Location: Orono, Ontario Posts: 186	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.

10-03-2009, 03:38 PM	#3
ozmdd Reluctantly Crouched... Drives: 2008 Yaris HB M/T Join Date: Oct 2008 Location: DFW, TX Posts: 867	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.

10-03-2009, 08:11 PM	#4
bribri Drives: white stock yris Join Date: May 2009 Location: Barrie, Ontario, Canada Posts: 47	Thanks.

10-04-2009, 12:50 AM	#5
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	ive always put in 4 qts. manual says 3.8 but 4 wont hurt.

10-04-2009, 12:52 PM	#6
Lafiro Drives: 06 Yaris Sedan Join Date: Jun 2006 Location: NYC Posts: 694	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.

10-04-2009, 07:15 PM	#7
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	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.

10-04-2009, 10:51 PM	#10
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	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.

10-04-2009, 10:54 PM	#11
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	I would have thought there were more people agreeing with you (me included) than against you.

10-04-2009, 11:43 PM	#14
bribri Drives: white stock yris Join Date: May 2009 Location: Barrie, Ontario, Canada Posts: 47	sorry I asked End of thread

10-04-2009, 11:54 PM	#15
soloecho2 Drives: 2004 Echo HB Join Date: Oct 2008 Location: Orono, Ontario Posts: 186	That will learn ya. Ha Ha Ha. See you next Monday

10-04-2009, 11:55 PM	#16
mikenacarato SIPNDEW View User's Garage Drives: 15 STI Join Date: Oct 2008 Location: Brentwood, TN Posts: 2,281	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.

10-05-2009, 01:44 AM	#18
Lafiro Drives: 06 Yaris Sedan Join Date: Jun 2006 Location: NYC Posts: 694	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.