With me being a complete novice at this, where on this particular model
is the oil cooler located? I do not see any additional lines going to
the radiator outside of the xmsn lines. There doesn't appear to be
stand alone cooler core mounted near the radiator.
Jim Warman wrote:
The bulk of my work is on SuperDuty trucks... you'll have to pardon any
errors or omissions on my part....
The common conception for an oil cooler would be oil lines going to the
radiator or a stand alone cooler in front of the radiator... In the case of
the modular engines (such as your 4.6), the oil cooler is located where the
oil filter attaches... To be sure, you should see two coolant lines going to
the base of the filter. These will be roughly the same size as the heater
No standalone separate real oil cooler on a 4.6L DOHC standard from the
factory on a T'Bird, although you can install an oil cooler model of the
oil filter adapter plate (F4AZ 6881A) that has discrete oil cooler line
ports for an external oil cooler. However, the passenger car 4.6L DOHC
engine DOES HAVE a small amount of oil cooling of sorts, since there's
an in/out type of arrangement of engine coolant at the stock oil filter
adapter plate that carries away engine oil excess heat to the cooling
system. Unfortunately, this is a flawed design that keeps the oil flow
and coolant separated by a ridged gasket that allows a small amount of
100 psi (cold) 'tramp' oil to be injected into the coolant when said
gasket begins to fail. See here for gasket replacement:
I'll assume you meant SOHC as I dunno of any 4.6 DOHC's
that were factory mounted in ThunderChickens.
The common case is a little oil in the coolant and not
How much damage can be expected? Do folks commonly wink at the
problem (like I do my slightly leaky 4.6 rear main seal)?
I thought the last of the T'Birds got the DOHC. In any event, the engine
block & adapter plate should be the same. When the gasket went in my '94
Mark VIII, first I noticed an oil film (layer) building up in the
coolant overflow, and a few days later the adapter plate started
leaking. I drained the coolant, saved the oil (near-new Mobil One 5W30),
flushed the cooling system, imstalled a new gasket, and then put the oil
back in the engine. I then had to use a turkey baster to siphon the
small amount of tramp oil remaining in the reservoir. The oil almost
always goes to the coolant in this situation, due to the pressure
differential. You do want to fix the problem, since engine oil isn't a
very efficient coolant and can make the engine run hotter than normal.
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