Auto Parts and Repairs
Oil and Oil Filters
Transmission Fluid
Honda Accord DX

When checking the antifreeze there is oil in the radiator the transmission dipstick shows the same mixture what could cause this?

474849

Top Answer
User Avatar
Wiki User
2015-07-17 17:32:31
2015-07-17 17:32:31

USALLY it's because the Transmission cooler that's located inside the RADIATOR HAS DEVELOPED A LEAK.The COOLING system & TRANSMISSION need 2 b FLUSHED after the RADIATOR is REPLACED -- OR BYPASS the RADIATOR TRANS cooler & put on an EXTERNAL cooler INFRONT of the existing Radiator.

It sounds like the head gasket is leaking.

I just had the same problem. It started with noticing just a thin layer of light brown foam when I removed the radiator cap. There was no foam or anything else wrong with the engine oil or trans fluid. My mechanic took a quick look at it and said to just keep an eye on it. I checked it every week with no change noticed, then sort of forgot about it for a month. When it started to shift a little rougher than usual, I checked the trans fluid again. This time the fluid was a nasty color of rusty brown and very opaque. Apparently it is not that uncommon to get a leak between the radiator coolant and either the engine oil or the trans fluid. Just speaking from my own experience, I believe it is more common to have the engine oil leak (bad head gasket or cracked head) in which case there will be obvious white/brown foam in the engine (on the oil cap) when it is checked. The trans fluid is under higher pressure than the radiator coolant so most of the flow is from the trans to the radiator, but as the system cools down, it can (and does) flow the other way. It just takes a little longer to notice the problem. Since radiator fluid can destroy an automatic transmission and trans fluid can destroy the seals in the radiator system it is very important to figure out what�s going on as quickly as possible...and NOT �just keep an eye on it�....won�t be going back to that shop. My van (a 94 Pontiac Transport) is in the shop now getting a new radiator (has two internal trans coolers inside of the radiator), and when that�s done I�m driving it directly to have all the trans fluid flushed. With any luck, it will start to shift smoother ...if not, it will have been a VERY expensive lesson. Hope this helps.

1
🙏
0
🤨
0
😮
0
😂
0

Related Questions

User Avatar

the cooling tank in the radiator for the transmission is bad

User Avatar

The transmission cooler (possibly part of the radiator) has failed

User Avatar

The transmission cooler (possibly part of the radiator) has failed.

User Avatar

Most Likely you have a leak from the transmission cooling tank on your radiator to the antifreeze portion of the radiator. Jeff

User Avatar

From the transmission? No? But antifreeze & transmission fluid can mix. Your transmission uses a small portion of the radiator as a transmission cooler, normally at the very bottom or side. In very rare instances, this cooler can develop a leak and allow transmission fluid and antifreeze to mix together. The only fix is to replace the radiator.

User Avatar

You have a failed radiator. Most vehicles have a trans cooler on the side of the radiator.

User Avatar

This is a fun one. Pop the hood. Okay, now you're facing the engine...you'll see there's a hose to your left coming out of the top of the radiator, look under that hose and you can see the transmission...the dipstick screws right into the transmission...make sure you're checking it with the engine OFF, and also be careful not to burn yourself on that radiator hose, it can get really hot. The dipstick is quite aways down and rather short.

User Avatar

You have a leaking transmission cooler, usually part of the radiator. The transmission fluid is mixing with the antifreeze turning it pink.

User Avatar

Most transmissions are cooled using separate tubs in your radiator, if this tube develops a leak it could mix with your antifreeze, you need a new radiator...

User Avatar

Failed oil to water cooler ( usually antifreeze from the radiator ) Water entering through a seal, Dipstick, axle seal, etc Drove into deep water and it came in through the vent.

User Avatar

It is near the radiator just off center to the driver's side (LHD), it's black and latches down. Ans 2 - . The dipstick is at the front of the transmission just in front of the cooling fan on the radiator.

User Avatar

Failed transmission oil cooler, which is part of the radiator.Failed transmission oil cooler, which is part of the radiator.

User Avatar

If your car has an automatic transmission, there will be a short dipstick near the front (radiator side) of the transmission. With the transmission warmed up (go for a short drive), park on a level surface, and with the transmission in park or neutral and engine running, pull the dipstick out and check the fluid level against the markings on the dipstick.

User Avatar

in the dipstick tube at the front of the engine, just behind the radiator.

User Avatar

Front of the engine right behind the radiator.

User Avatar

At the dipstick. It is down in between the radiator and the engine.

User Avatar

For the 6 speed transmission the dipstick is located behind the radiator support, to the left of the air cleaner box. The dipstick is a round yellow plastic towards the bottom of the transmission. The exhaust manifold is slightly above it, so be careful not to burn yourself.

User Avatar

Are you sure that isn't antifreeze and if so that would indicate the radiator is defective. There is a transmission oil cooler in the radiator.

User Avatar

The transmission has a very small dipstick that is yellow located between the transmission mount and transmission on the side closest to the radiator. There is a 13mm bolt that holds the dipstick in place. Do not remove any bolts from the top of the transmission or you can end up having to have the transmission fixed.

User Avatar

Facing the grille - look over the top of the radiator and fan, way down toward (your left) at the bottom of the engine. You should see a small dipstick handle down there. THAT is the transmission dipstick.

User Avatar

Either the radiator hose is loose where it connects to the radiator or there is either a small hole in the radiator or in the radiator hose. Try checking the hose to see if it's loose or check for small holes in the hose or radiator.

User Avatar

If it is motor oil in the anti freeze, then it is either a cracked head, cracked engine block, or a head gasket blown. If it is transmission fluid in your antifreeze, then the radiator is leaking from the transmission cooler ----- although usually that would cause antifreeze to be in your transmission fluid.

User Avatar

The radiator needs antifreeze.


Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.