Oil Change over full mark - Toyota Prius Forum : Prius Online Toyota Forums
User Tag List

Reply
 
LinkBack Thread Tools
post #1 of 28 (permalink) Old 06-11-2004, 11:58 AM Thread Starter
Member
 
Join Date: Nov 2003
Posts: 81
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Default Oil Change over full mark

OK - Just got the oil changed. Told the mechanic not to put in over 3.9 qts - even gave a typed sheet to him indicating oil filter # and not to overfill (3.9 qts) Well brought the car home and checked the oil. It is just over the top dot (guess the top dot means full) Do I have a problem???
oldfox is offline  
Sponsored Links
Advertisement
 
post #2 of 28 (permalink) Old 06-11-2004, 01:27 PM
Senior Member
 
bshef's Avatar
 
Join Date: Jun 2004
Location: left coast
Posts: 233
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default

OVERFILL - This is an irritating problem a number of Prius owners have to deal with. Careless mechanics will sometimes pour too much oil into the engine. Beside the risk of damage from overfill, efficiency is reduced. Excess oil will cause MPG to drop.

I borrowed the above text from John's site!

Since you did pay for this service........you could complain to the shop who performed the service and ask them to remove the excess (although I hate being "without" my vehicle!).
You could probably handle getting the level down yourself. Try using an old rag and just repeatedly wipe off the dip-stick until you reach the proper level... ....or........crawl under your vehicle and completely do the change yourself!

I've been everywhere man...
Crossed the deserts bare man...
breathed the mountain air man....
bshef is offline  
post #3 of 28 (permalink) Old 06-11-2004, 06:25 PM
Senior Member
 
Join Date: Sep 2002
Posts: 515
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default

> Do I have a problem???

Just a little is fine, though quite irritating.

I played with an overfilled Prius last week. Going from 1/4 inch above the full mark to 1/4 inch below, I ended up draining a little over 1/2 quart of oil. That gives you an idea what we are dealing with.

The best solution is to switch to synthetic oil. It prevents overfill from ever happening, better protects you engine, and at the same time increases your MPG a little bit.

Buy 4 quarts of synthetic oil. Pour 1/2 quart into a very clean container. (A simple suggestion is a dry purified-water bottle.) That way they only have 3.5 quarts of oil to begin with, making it impossible to overfill. (Remember, it is far easier to add a little bit more oil than to remove it.)

And by bringing in your own synthetic, you can save a few bucks rather than having to pay the dealer's more expensive price for the same stuff. Also, don't forget to ask for an empty back. Then pour the 1/2 quart you saved into it for use next time.
john1701a is offline  
 
post #4 of 28 (permalink) Old 06-12-2004, 08:08 AM
Member
 
Join Date: May 2004
Posts: 84
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default

It's silly to make a car with a 3.9 quart oil capacity because mechanics are going to simply pour in four quarts. No one is going to measure 3.9 quarts. I am sure that the extra 0.1 quart will do no harm.
jamarimutt is offline  
post #5 of 28 (permalink) Old 06-12-2004, 08:30 AM
Senior Member
 
Join Date: May 2004
Location: Munich, Germany, Drapanos, Crete, Greece & Nivyanin, Bulgaria.
Posts: 425
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default Re: Oil Change over full mark

Quote:
Originally Posted by oldfox
OK - Just got the oil changed. Told the mechanic not to put in over 3.9 qts - even gave a typed sheet to him indicating oil filter # and not to overfill (3.9 qts) Well brought the car home and checked the oil. It is just over the top dot (guess the top dot means full) Do I have a problem???
And the first thing he would have done with the sheet is bin it Waste of time telling mechanics what to do. They never listen.

Victor

2004 Blue Executive with Navi, BT, and Backup Cam.
Victor is offline  
post #6 of 28 (permalink) Old 06-12-2004, 09:02 AM Thread Starter
Member
 
Join Date: Nov 2003
Posts: 81
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Default

Appreciate all your responses - Feel a bit better now Plan to switch to synthetic oil at the next (2nd) oil change. Was going to switch this time but after being told by the manager that yes, I had free oil changes for 3 years when I purchased the car on 15 Dec 03 - I received a letter for one free oil change and regrets for the confusion, etc, etc. Decided I might as well get there free oil for this one.

Will purchase the synthetic myself - probably Mobile one - and follow the suggestion to take a half qt out.
oldfox is offline  
post #7 of 28 (permalink) Old 06-12-2004, 11:21 AM
Senior Member
 
Join Date: Sep 2002
Posts: 515
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default

> No one is going to measure 3.9 quarts.

Most don't measure 4.0 quarts either.

Dealers & Quick-Change places pump oil directly from a very large barrel... which makes it extraordinarily easy to overfill. There isn't ever a bottle involved unless you bring it in yourself.
john1701a is offline  
post #8 of 28 (permalink) Old 06-13-2004, 07:40 AM
Member
 
Join Date: May 2004
Posts: 84
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default

The quick change place I visit pours from a couple of large barrels, but the barrels only have one or two grades of oil (the most common ones). The 5W-30 grade used by the Prius is not available locally in barrels so they have to use bottles. Can an additional 0.1 quart really have a negative impact on the engine? If so, it is indeed very silly to design and inconvenient to have an engine with a 3.9 quart oil capacity.
jamarimutt is offline  
post #9 of 28 (permalink) Old 06-13-2004, 09:56 AM
Senior Member
 
Join Date: Sep 2002
Posts: 515
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default

Apparently we have a misconception emerging, due to owners be so observant.

The actual problem is with those getting way too much. So when they pull their disptick out, they see that it is 3/8 of an inch past the full mark. That's 2/3 of a quart beyond what was really need. Besides being wasteful, it could potentially harm the engine.

Having just a tiny bit over the full mark most likely won't do any harm, but it does impact efficiency. Watching the Multi-Display, you'll be able to confirm that. But in a traditional vehicle, you can't. Yet the problem exists for their engines too.

You'd be amazed how many problems have went unnoticed for decades. Oil overfill is clearly one of them.

Prius has a capacity of 3.9 quarts, which doesn't mean you should try to squeeze that much in. It is a maximum. For better performance, use around 3.5 quarts.
john1701a is offline  
post #10 of 28 (permalink) Old 06-13-2004, 12:14 PM
Guest
 
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
Default Here's What I do

I bring 4 quarts in and 3 are sealed. I open one and discard 20-30% of it. This way they CAN'T screw up.
 
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  Similar Threads
Thread Thread Starter Forum Replies Last Post
MY 2010 Full Model Change April 2009 stream Toyota Prius General Discussion 0 05-22-2008 12:10 PM
Toyota Announces Worldwide Prius Sales Top 500,000 Mark cwerdna Toyota Prius General Discussion 27 07-24-2006 10:02 PM
Package 9 available now -No extra dealer mark-up. arizona charlie Toyota Prius General Discussion 4 08-20-2004 07:51 PM
Mark 1 or NHW10 pguest Toyota Prius - Technical Chat 2 08-10-2004 05:57 AM
Ultimate dealer mark-up +$9K jimvt Toyota Prius General Discussion 17 06-14-2004 01:07 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome