Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
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If the original engine oil cooler is leaking replacing it would correct this here.You run the chance of any after market oil cooler leaking (if one is found for this model) or even the factory leaking after time so they both have the chance to fail as much as the other.Usually the oil cooler will hold up a long time so if you replace it with the factory oil cooler you should at least see around 10 years use or longer on it.Some last forever to.
In order to replace the thermostat the pipe needs removed from the housing.On this model the intake needs removed to do this here.Then you would remove the inlet pipe bolt and pipe.Keep in mind you want to replace the O ring seals on the pipe when reinstalling it.
Main concerns would be fuel in the tank,needs drained and refilled and fuel filter replaced.Check wiring for any damage needing repaired.Battery needs replaced.Oil leaks checked for as well as fuel leaks as seals and gaskets dry out over time and risk leaking.Check for issues with the tires having flat spots as well as they will develop after sitting so long and may need replaced.
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If the retaining bolt has been removed that holds the pipe in place it is just the seals on the end of it then that is securing it further.Usually you can slightly twist it and wiggle it to break it free to remove it but once it is broke free usually you can wiggle it out.It can be tough as the seals can cause it to stick tight but usually wiggling with a slight twist back and forth will free it up for removal.
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Your on the same question here so technically this is only 1 question.It is when you open a whole new question on a different post that it may count but we are still on the same question here so far.
The oil cooler does have seals that need replaced when the oil cooler is replaced as shown here.
When it is replaced if there are no running or driving issues with the vehicle then you should be o.k. from here to operate the vehicle for a long time unless something else fails or acts up in the future.
You want to apply a 2mm (.08 inch) bead of RTV silicone to the groove around the engine oil cooler cover in place of the old seal.Make sure the sealing surface is clean.
Tighten the engine oil cooler cover bolts to 22 foot pounds.Tighten the engine oil cooler inlet and outlet nuts to 15 foot pounds.
Let me know if you need anything else and feel free to rate my help here.Thanks Pete
The seals are most common to leak.You can pressure test it to see if it leaks and if it doesnt then it is the seals that were leaking needing replaced.If it does leak then it will need replaced.