Oil in coolant

1988 TOYOTA AVENSIS
261,000 MILES • 3.0L • 6 CYL • 4WD • MANUAL
Avatar
NORETTA MORALES
  • MEMBER
  • 5 POSTS
Did head gasket, cylinder resurface (had crack replaced head), water pump, timing belt, radiator, coolant and heater hoses, thermostat and still oil in coolant. Now what?
Dec 19, 2018 at 8:21 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good morning,

This could be a bad oil cooler. there is coolant that runs through the cooler and if the cooler fails it will mix oil with the coolant.

Roy
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Dec 19, 2018 at 8:36 AM
Avatar
NORETTA MORALES
  • MEMBER
  • 5 POSTS
This is a manual transmission, no oil cooler.
Dec 19, 2018 at 8:58 AM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
No, not a transmission cooler, an oil cooler which is part of the oil filter adapter.

it does not matter if it is manual or automatic.

Roy
Dec 19, 2018 at 9:13 AM
Avatar
NORETTA MORALES
  • MEMBER
  • 5 POSTS
This vehicle does not have engine oil cooler.
Dec 19, 2018 at 10:11 AM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Okay, the diagram I have shows it does but that is okay.

The only thing left is a cracked block. that would be the only way to transfer oil into the coolant since you had the top end redone.

Roy
Dec 19, 2018 at 10:30 AM
Avatar
NORETTA MORALES
  • MEMBER
  • 5 POSTS
That's what I was thinking, just hoping there was another option.
Dec 19, 2018 at 10:55 AM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Sorry, the oil cooler was the only other option.

Roy
Dec 19, 2018 at 11:02 AM
Avatar
NORETTA MORALES
  • MEMBER
  • 5 POSTS
Thanks for the help.
Dec 19, 2018 at 3:00 PM
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
You are welcome.

Roy
Dec 19, 2018 at 3:06 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.