Coolant leak & mixing with oil

cre · 09-21-2012, 02:06 AM

So you don't think coolant in the oil is a problem...... You need to start studying a lot and find another mechanic if he agrees with this. This is ridiculous. Of course the coolant leaks first with a leak between the oil and coolant jackets, it's thinner than the oil. It takes a big hole for the oil to enter the coolant system but by then your bottom end may be trashed.

So, to recap, if there is actually coolant entering the oil circuit you have a problem... PERIOD... no ifs or maybes about it.

907mge · 09-21-2012, 05:52 PM

Also know that just because you have a mhg and arp studs does not mean the job was done correctly. For a mhg the block and head surfaces must be machined smooth. Not to mention chasing threads and a retorque after several heat cycles are never bad ideas. It is very possible to do a hg and have it go bad shortly after.

nick124 · 09-22-2012, 04:52 PM

Coolant in the oil is obviously a problem. I tried to explain where it is mixing but I guess I didn't make myself clear. $700 also includes the timing belt job. I do my own work usually but I am new to the Supra and I don't have tools for the timing belt anyway.

I'm bringing it in on Tuesday. I'll let you know if it is still mixing after.

09-21-2012, 02:06 AM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	So you don't think coolant in the oil is a problem...... You need to start studying a lot and find another mechanic if he agrees with this. This is ridiculous. Of course the coolant leaks first with a leak between the oil and coolant jackets, it's thinner than the oil. It takes a big hole for the oil to enter the coolant system but by then your bottom end may be trashed. So, to recap, if there is actually coolant entering the oil circuit you have a problem... PERIOD... no ifs or maybes about it. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Auto Supra Coolant hose pressure and return leak to oil pan and filter area?	rjSupra	MKIII Supra	45	01-18-2011 12:12 AM
Coolant leak	sd88supra	MKIII Supra	6	09-22-2010 07:16 PM
Heater Union (Coolant Leak)	slader99	MKIII Supra	11	12-28-2009 12:29 AM
88 Non-Turbo coolant leak	Tazman3653	Non-Generation Specific Questions	1	03-30-2009 02:09 AM
Coolant leak issues	D_Train	MKIII Supra	1	03-15-2007 04:30 AM

09-21-2012, 05:52 PM	#2
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	Also know that just because you have a mhg and arp studs does not mean the job was done correctly. For a mhg the block and head surfaces must be machined smooth. Not to mention chasing threads and a retorque after several heat cycles are never bad ideas. It is very possible to do a hg and have it go bad shortly after.

09-22-2012, 04:52 PM	#3
nick124 Stock Join Date: Sep 2012 Location: Brantford, Ontario Posts: 10	Coolant in the oil is obviously a problem. I tried to explain where it is mixing but I guess I didn't make myself clear. $700 also includes the timing belt job. I do my own work usually but I am new to the Supra and I don't have tools for the timing belt anyway. I'm bringing it in on Tuesday. I'll let you know if it is still mixing after.