2010 oil leak ...

[cabinfevrr]

Originally Posted by Hershey

could starting both cars out with synthetic motor oil at 1,500 miles be the culprit ? . Just seems odd that both have the same leak and are a few years apart . Can't think of any other reason .

^^ this.

A couple years ago, I decided I didn't want to be a car salesman anymore, and I quit my Job at Toyota. We always told people to NOT use synthetic oil until after your first maintenance service (your 4th scheduled oil change) - the engine has to be broken in on conventional oil. I'm not a scientist, or an engineer, but that is what we were instructed to tell people, when delivering the vehicle...any toyota vehicle for that matter. I have seen warranties ripped up because people put synthetic oil in after 5000.

the thing with breaking in on synthetic, is that we know the clearances that can be achieved with synthetics are closer than available with conventional oil. we told people that if you used synthetic oil too soon, your metal/metal areas would wear more than with convetional as conventional is more restrictive. i wouldn't be surprised if you start burning oil too.

for what it's worth, I have a 2008 Yaris RS model 5 door liftback (salesman had to have the most expensive yaris (: ), and after 70,000 kilometers, i have no oil leak where you indicated. I've stayed with conventional oil since day one, and although may be proven to be more restrictive, I change my oil every 8000 kilometers, I have no leaks.

You obviously bought your car new, did your salesman not mention synthetics when your vehicle was delivered? Regardless, it's in your owners' manual.

bottom line, after talking with a lot of toyota mechanics over the years, your car is designed to run on conventional oil. sure, it may work with synthetic, but you could probably also use auto transmission fluid or power steering fluid as oil too.

[Lucas13]

Have you ever flushed the engince with some product?

[Hershey]

nope , neither one .

[Hershey]

2008 nearing 22,000 mis. and 2010 around 7,300 .

[frog13]

I'm not arguing with anyone...but,synthetic motoroil WILL find faulty/faultering gaskets/seals!.I'm not debating a vehicles mileage or service records or the owners ability to do them...........synthetic has FAR superior flow characteristics,shear stability etc.At least try switching to a conventional motoroil and see what the result is.

[1stToyota]

He's already tried that...and I doubt that the oil was the reason for the failed head gasket. A seal maybe, in a neglected motor, but not a head gasket in a well maintained low mileage vehicle.

edit... oops, I re-read and saw where your indicated faulty gaskets

[Hershey]

this is a picture of where the head gaskets are leaking in both YARII circled in RED . This is taken from the 2010 3 door . The area circled in BLUE is the sealant for the tiiming chain cover that I thought was leaking . The area in RED is where the plastic head gasket is located on top of the cavern of the block that's found above the large ledge . The oil seeps from underneath and runs along the edge of the block / exposed head gasket ( in left side of RED circle ) and down to the sealant in BLUE . Then that runs under the large ledge and down the corner of the block that's pictured in the thread " Noticed possible oil leak " on page 2 and then scroll down to POST # 29 ( http://www.yarisworld.com/forums/sho...t=26502&page=2 ) to see the bottom of the large ledge where oil collects on the 2010 .

[Red Horse]

This thread should be in a history of yarisworld, Hershey just confirm that the using conventional oil is more restrictive than syntetic.

[Hershey]

both have had 2 oil changes with SHELL 5w-30 conventional oil in a months time and around 600 > 800 miles for both oil changes for each YARIS . So , maybe it's too soon for seepage to slow or stop with the conventional . . Will keep track of it . No improvement , then off to the service center for both YARISes .

[Hershey]

I suggest that those who started to use a synthetic early in the break in period or later take a good look for this . Those who use conventional may want to do the same . Many might not be aware of it . Especially those who get their oil changed by someone else . Would think there are some out there with this issue . I didn't notice it on the 2008 ( bought new ) until this past spring and I do all the oil changes for both cars . It's easy to overlook .

[Hershey]

TOYOTA . Oh , what a feeling !!! . More like the feeling you get when you get your prostate exam .

[sleey0]

So, the big question is:

Is this a common issue? Anyone else have leaks? Please share.

[Hershey]

it's not an easy leak to spot . As pictured above .

[Lucas13]

While I was taking care of the tension of my drive belt I decided to do a good inspection of the head gasket with a mirror and guess what...surprise!!! I found a small leak by the timing chaing side on the head cover gasket,I was able to see the dust trapped in the oil, the leak is also behind the alternator on that tiny courner.

Folks that use conventional oil should also take a look at this, this shouldnt happen so soon, normally the gasket that starts leaking first is the valve cover one, but the head gasket??? wow!!!

[sleey0]

I see these pics and maybe it's just me but I am not seeing a huge problem here.

I dunno. Looks pretty insignificant to me.

[Hershey]

Originally Posted by sleey0

I see these pics and maybe it's just me but I am not seeing a huge problem here.

I dunno. Looks pretty insignificant to me.

this is because these areas have been cleaned before the pictures were taken . They're are photos with oil collected underneath the leak for both YARIS .

[Hershey]

These are from the '08 which has 23,000+ miles and leaks more . The 2010 seems to have slowed down . 1st pic is where the oil leaks from the plastic head gasket above the large ledge and collects underneath it . Have found it to run along seal of timing chain cover and end up on the upper lip of the oil pan . Not all that significant . The 2nd pic is the top of the ledge . The area circled in RED is where the plastic head gasket is hidden under the upper head . The last pic is a close up of the plastic head gasket that leaks for both ( sorry a bit blurred ) . The '08 sedan gets wet with oil every 100 miles or more , while the 2010 hasn't with same miles as of recent.

[Hershey]

Originally Posted by Hershey

These are from the '08 which has 23,000+ miles and leaks more . The 2010 seems to have slowed down . 1st pic is where the oil leaks from the plastic head gasket above the large ledge and collects underneath it . Have found it to run along seal of timing chain cover and end up on the upper lip of the oil pan . Not all that significant . The 2nd pic is the top of the ledge . The area circled in RED is where the plastic head gasket is hidden under the upper head . The last pic is a close up of the plastic head gasket that leaks for both ( sorry a bit blurred ) . The '08 sedan gets wet with oil every 100 miles or more , while the 2010 hasn't with same miles as of recent.

Disregard the area in RED for post #5 and post #24 and #34 circled in BLUE . Found that not to be the source , the oil does collect there from the exposed head gasket (black ) circled in RED . This was in the early stages when hunting for the source of the oil leak .