5th Gen Engine Oil Leak at 50k

[assassin]

Before I start the oil filter canister and drain plug are not the source of the leak.

Have some dye and a uv light coming...was wondering if anyone has experienced an oil leak of any sort and would mention where it was coming from so I'd have some great places to start checking first.

 

[euser]

Before I start the oil filter canister and drain plug are not the source of the leak.

Have some dye and a uv light coming...was wondering if anyone has experienced an oil leak of any sort and would mention where it was coming from so I'd have some great places to start checking first.

My valve cover was leaking on my 3rd gen a while back, but that was after 16 years and 250k miles. But maybe something is wrong with your gasket.

 

[Mack1611]

I have a leak at 26K. Mine looks like it is the gasket between the oil filter housing and the block. I'll be changing this out this weekend. Clean the oil off with carb cleaner or something and go drive around for a while and keep checking for new oil.

 

[assassin]

Thanks guys! Should I be using the specific engine degreased to clean up areas or is brake cleaner ok to use to spray on things?

 

[FrenchToasty]

The timing cover inspection plate, is a known source of an oil leak, passenger side, front of engine.

 

[Mack1611]

Brake cleaner will work.

 

[progress4m]

Before I start the oil filter canister and drain plug are not the source of the leak.

Have some dye and a uv light coming...was wondering if anyone has experienced an oil leak of any sort and would mention where it was coming from so I'd have some great places to start checking first.

Do you have any pictures of that oil leak? That would help to narrow it down.

 

[davester00]

Rms

I had a rear main seal leak @ 42K. Mine is probably the 4th or 5th one I’ve heard about in a 5th gen

 

[the_fornicator]

There's a thread about a rear mail seal leak being a quasi common occurrence on 5th gens. Hopefully covered under warranty for you.

 

[assassin]

Hello everyone thank you for the input.

Really hard for me to take a picture of where its coming from but looks like either at the front crank or front passenger side where the hoses go from the oil pain to the block. The belt and pulleys are covered in oil.

Luckily this type of engine oil leak should be under the powertrain warranty as I am below 60k/5years.

Yeah I was freaked out as I remember only like 3-4 quarts of oil left when I changed it.

Going to have dealer look at it Monday and I will update you guys with what I find.

 

[progress4m]

Hello everyone thank you for the input.

Really hard for me to take a picture of where its coming from but looks like either at the front crank or front passenger side where the hoses go from the oil pain to the block. The belt and pulleys are covered in oil...

....

Sounds like it is timing cover leak... as you said, it should be covered under power train warranty... still sucks that it happens with 5th gen 4.0,- I believe most of the time I have seeing it on first year (s) of this gen... what year is your 4Runner?

 

[assassin]

sounds like it is timing cover leak... As you said, it should be covered under power train warranty... Still sucks that it happens with 5th gen 4.0,- i believe most of the time i have seeing it on first year (s) of this gen... What year is your 4runner?

2015

 

[flyrv9]

A search for threads dealing with oil leaks will net some with pics; as mentioned there is a history of 5th gen leaks. Also, if you use brake clean, do not get it on any painted surface. It will remove the paint fast!

 

[progress4m]

2015

Got it.
Good luck! Hopefully dealer will take care it with no issues!
Keep us posted.

 

[assassin]

Got it.
Good luck! Hopefully dealer will take care it with no issues!
Keep us posted.

According to dealer its an oil pressure sensor switch which is not covered under the powertrain warranty

 

[5thToy]

That's pretty decent news, no? Relatively inexpensive bolt-on sensor rather than a major mechanical. Yeah, it's on you but still.

 

[assassin]

That's pretty decent news, no? Relatively inexpensive bolt-on sensor rather than a major mechanical. Yeah, it's on you but still.

So Oil Pressure Sensor Switch is leaking and it leaked all over the timing belt so they want to replace that too. Apparently its all over the timing belt so they want to replace that too, but since something that was not under power train (oil pressure sensor switch) leaked over the timing belt all is out of pocket.

 

[arehman11]

So Oil Pressure Sensor Switch is leaking and it leaked all over the timing belt so they want to replace that too. Apparently its all over the timing belt so they want to replace that too, but since something that was not under power train (oil pressure sensor switch) leaked over the timing belt all is out of pocket.

You should find a new dealer, these engines don't have a timing belt.

 

[Thermal]

You should find a new dealer, these engines don't have a timing belt.

rofl

 

[progress4m]

I agree with above comments: find new dealer….

I would also let them quote the replacement of “nonexistent” timing belt and then report them to Toyota corporate for scamming…

In addition, if they are actually right (obviously very doubtful now) about oil pressure switch leak, then I believe you are the first (or one of the first one) that had that issue on 5th gen 4.0 engine…

Again, I would definitely recommend second opinion…