Oil Overfilled 5/8 inch

If it is only about a cup overfill, I'd be inclined to just live with it. Does the level drop over time? If so I'd be more inclined.

If it's really bugging you, and you're able to raise the car and get under, I would just loosen the drain bolt, till it's almost off, keep pressing it in, and cant it slightly, get a trickle going, till you've drained off a cup (use something like a mason jar with gradations), or even two cups, to be sure. Then check again, after running the engine, and be sure to be on level ground, top up as required. For safety, just incase it gets away from you, have a drain pan under the whole thing too.

A caution though, it's a little stressful, holding the drain bolt like that, and it'll take a few minutes to trickle out enough, just get yourself comfortable, some neck support.

Clicking on your link, that looks like a good idea though. The main question: would the tube be thin enough? You could probably jury-rig a thinner tube though. The more I think about, the more I'm thinking you should disregard everything I said above, give that a go first, lol.

 

Yeah read my addendum, it does seem a good idea. The questions ask about the diameter of the tube. I'm sure you could just swap to a thinner tube too, if needed. Go for it and report back?

 

Too late !!

With a 13 year old vehicle, I certainly would NOT be obsessing over an extra .3 quart of oil.
My advice: Just leave it ALONE. It likely won't stay that full for very long.

 

Two simple measures that would help in this situation.
1) Change the oil yourself.
2) Install yourself or have a shop install a Fumoto valve. I change my own oil, but depending on my mood, the phase of the moon and how much Rainer Beer I may have consumed, sometimes I find I have glugged a bit too much Dino into the block. A quick opening of the Fumoto provides a nice, neat solution.

 

You can't recover oil through the oil filler cap opening: it's too high up, in the camshaft zone, oil just trickles through there, doesn't linger.

Made myself useful: the measured Outside diameter of the O-ring on the handle of the dipstick, likely more-or-less equal to the Inside Diameter of the guide tube, is 8 mm, so you should be ok with 1/4" OD tubing.

One or two things worry me about those valves. The main issue, head idiot in charge of maintenance (me) might not close it tight. Or, it gets hit and knocked off.

 

The gen 2 has a mass filter problem with to much oil, the consensus is to leave it 1/4" low on the dipstick so yes 5/8th's over is a problem, do a search, when the mass filter get's soaked, oil starts getting into the burn cycle, big no-no, even the dealer knows this.

 

After changing the oil 20 times on my 07 the car takes exactly 3.6 quarts with a new factory oil filter.

Jiffy lube’s database says the G2 takes 5 quarts for instance.I always say that’s nice your putting this in today and hand them a bottle with 3.6 quarts.

Not sure but I think the g3 motor takes more oil than the g2 motor so maybe they get that confused,
Mendel what’s the G3 take?

Based on my experience I think 5/8 inch overfill is close to a quart overfilled.

 

I’m sure your wife refers to you in much more glowing terms.

 

With filter change: 4.2 liters, I believe 4.4 US quarts.

I let it drain well, then put in that amount, don't even bother looking at the dipstick, for at least day or two. And then when I do, I find it's just on the underside of the full mark. If I didn't drain so thoroughly it maybe would be on full mark.

 

YES!

You have way more than .35quart overfill.

1) OP has WAY MORE than .35quart excess overfill.
2) Horrible advice to leave it be. READ this post, then ask yourself if you would let this known problem be.

Another Walmart oil overfill, Toyota is hinting at new ICE | PriusChat​

Ed is probably closest to correct volume overfill. .35quart overfill is OFF.

 

[QUOTE="...One or two things worry me about those valves. The main issue, head idiot in charge of maintenance (me) might not close it tight. Or, it gets hit and knocked off.[/QUOTE]

I have a Fumoto valve on my Prius and love it. The Fumoto valve has a detent in its movement to ensure that it is closed and remains so. Additionally, Fumoto now makes a clip that slides over the lever to double-lock it. Before they started selling the clip they recommended placing a small hose clamp over the valve for off-road applications (farm tractors, etc.). I use a hose clamp even though I never get off of a paved road.

The only disadvantage to the valve is that it takes longer for the oil to drain due to the reduced diameter of the drain hole.

 

No it isn't.
But you are certainly free to believe whatever BS you want to believe.
Good luck.

 

If you don't have any specific experience working on Prius Gen 2 or knowledge them, it is probably better the you don't comment. While generalist knowledge can be helpful, at other times it can be detrimental. You sound like the type of person that once they have made up their mind, there is no changing it. Mores the pity. Further there is no need to continually flame people with whom you disagree.