Oil capacity - is it to full line?

Started by Ferrousfe, May 24, 2021, 12:15

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JohnGee

Quote from: Joesson on May 25, 2021, 13:05If 1296 ml is represented by 27mm then 1296/27 = 48ml

Yes, I understand that part, but how did 1296ml = 27mm / 48ml = 1 mm get established in the first place?

I'd also like to know more about the "linearity" of this relationship.
John

2006 Roadster, manual, leather, in Sable

Call the midlife!

Quote from: 1979scotte on May 25, 2021, 13:10
Quote from: Alex Knight on May 25, 2021, 11:44
Quote from: Call the midlife! on May 25, 2021, 07:03
Quote from: Alex Knight on May 24, 2021, 21:48
Quote from: Ardent on May 24, 2021, 16:19Bearing in mind. The difference between the F and the L mark on the stick equates to 1.3 litres.
So you have a bit of wiggle room.

As above. Better to Underfill and top up. Than overfill.

I actually thought it was 1.0L?
Same here, always had it as 1 litre but I generally just chuck in 500ml every 300 miles or so...

Blimey. My 2ZZ never needs topping up, even after a trackday.

Yours is very reliable.

Mine isn't unreliable, just uses a bit of oil..
60% of the time it works everytime...

Alex Knight

Quote from: Call the midlife! on May 25, 2021, 12:02
Quote from: Alex Knight on May 25, 2021, 11:44
Quote from: Call the midlife! on May 25, 2021, 07:03
Quote from: Alex Knight on May 24, 2021, 21:48
Quote from: Ardent on May 24, 2021, 16:19Bearing in mind. The difference between the F and the L mark on the stick equates to 1.3 litres.
So you have a bit of wiggle room.

As above. Better to Underfill and top up. Than overfill.

I actually thought it was 1.0L?
Same here, always had it as 1 litre but I generally just chuck in 500ml every 300 miles or so...

Blimey. My 2ZZ never needs topping up, even after a trackday.
You can't be trying hard enough 🤓

I might have a slight burning issue 😂

Au contraire, mon amis.

Behold, my rear brake pads:


Joesson

Quote from: JohnGee on May 25, 2021, 13:22
Quote from: Joesson on May 25, 2021, 13:05If 1296 ml is represented by 27mm then 1296/27 = 48ml

Yes, I understand that part, but how did 1296ml = 27mm / 48ml = 1 mm get established in the first place?

I'd also like to know more about the "linearity" of this relationship.

Reference to page 216 in my 2002 Owner's Manual advises that :
" The approximate quantity of oil needed to fill between the low level and the full level on the dipstick is indicated below for reference.
When the level reaches within the correct range, install the filler cap hand tight.
Oil quantity, L 1.3"

I suggest this was likely derived empirically. The corresponding linear dimension, on the dio stick, can be determined buy measurement.
If you would like to know about the linearity of the ratio between this volume and measurement I suggest that a simple mathematical ratio can be used as the oil is dispensed through a relatively wide orifice and drains down into a relatively large pan area. There is no long feeder tube, as in the case of the windscreen washer bottle that fills rapidly until nearing full when the fluid rises up the filler neck.

1979scotte

Quote from: Alex Knight on May 25, 2021, 13:56
Quote from: Call the midlife! on May 25, 2021, 12:02
Quote from: Alex Knight on May 25, 2021, 11:44
Quote from: Call the midlife! on May 25, 2021, 07:03
Quote from: Alex Knight on May 24, 2021, 21:48
Quote from: Ardent on May 24, 2021, 16:19Bearing in mind. The difference between the F and the L mark on the stick equates to 1.3 litres.
So you have a bit of wiggle room.

As above. Better to Underfill and top up. Than overfill.

I actually thought it was 1.0L?
Same here, always had it as 1 litre but I generally just chuck in 500ml every 300 miles or so...

Blimey. My 2ZZ never needs topping up, even after a trackday.
You can't be trying hard enough 🤓

I might have a slight burning issue 😂

Au contraire, mon amis.

Behold, my rear brake pads:



Oh
First they came for the socialists, and I did not speak out—because I was not a socialist.
Then they came for the Jews, and I did not speak out—because I was not a Jew.
Then they came for me—and there was no one left to speak for me.

Free Ukraine 🇺🇦

Dev

Quote from: Joesson on May 25, 2021, 09:49@Dev
That sticker info agrees  with @Ardent 's 1.3 L on the stick.
As for difference between 1zz and 2zz dipstick/ oil capacity, at least one Member on here found out the difference the hard way.

It is possible that the 1ZZ is also under filled the same way.

After further research I think the 3.7l fill should be updated to the new revised Toyota spec of 4.2l after it is determined that the pan appears to be under filled.  There is no good reason why our car is not listed with the new capacity increase in 2008 retrospectively when they use exactly the same 1ZZ engine.

Call the midlife!

Quote from: Alex Knight on May 25, 2021, 13:56
Quote from: Call the midlife! on May 25, 2021, 12:02
Quote from: Alex Knight on May 25, 2021, 11:44
Quote from: Call the midlife! on May 25, 2021, 07:03
Quote from: Alex Knight on May 24, 2021, 21:48
Quote from: Ardent on May 24, 2021, 16:19Bearing in mind. The difference between the F and the L mark on the stick equates to 1.3 litres.
So you have a bit of wiggle room.

As above. Better to Underfill and top up. Than overfill.

I actually thought it was 1.0L?
Same here, always had it as 1 litre but I generally just chuck in 500ml every 300 miles or so...

Blimey. My 2ZZ never needs topping up, even after a trackday.
You can't be trying hard enough 🤓

I might have a slight burning issue 😂

Au contraire, mon amis.

Behold, my rear brake pads:


Eeeew...
60% of the time it works everytime...

Ardent

Quote from: JohnGee on May 25, 2021, 13:22
Quote from: Joesson on May 25, 2021, 13:05If 1296 ml is represented by 27mm then 1296/27 = 48ml

Yes, I understand that part, but how did 1296ml = 27mm / 48ml = 1 mm get established in the first place?
I simply measured the hatched area of the stick with a rule. 27mm

JohnGee

Quote from: Ardent on May 25, 2021, 21:52
Quote from: JohnGee on May 25, 2021, 13:22
Quote from: Joesson on May 25, 2021, 13:05If 1296 ml is represented by 27mm then 1296/27 = 48ml

Yes, I understand that part, but how did 1296ml = 27mm / 48ml = 1 mm get established in the first place?
I simply measured the hatched area of the stick with a rule. 27mm

All clear now, thanks. @Joesson explained that sump can generally be considered to have constant cross section as you move vertically up through the lower section of bowl, hence simple division of amount to take from E to F by 27mm yields the input per mm gain rate.
John

2006 Roadster, manual, leather, in Sable

Joesson

Quote from: JohnGee on May 25, 2021, 22:35
Quote from: Ardent on May 25, 2021, 21:52
Quote from: JohnGee on May 25, 2021, 13:22
Quote from: Joesson on May 25, 2021, 13:05If 1296 ml is represented by 27mm then 1296/27 = 48ml

Yes, I understand that part, but how did 1296ml = 27mm / 48ml = 1 mm get established in the first place?
I simply measured the hatched area of the stick with a rule. 27mm

All clear now, thanks. @Joesson explained that sump can generally be considered to have constant cross section as you move vertically up through the lower section of bowl, hence simple division of amount to take from E to F by 27mm yields the input per mm gain rate.

After careful cogitation and consideration I came to the conclusion that was close enough for an old codger and will do well enough for me and hopefully thee.

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