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1. Turbos do not have a flame trap. They have an equivalent Y fitting.
2. This Y fitting does to be cleaned, or replaced. Sometimes the small nipple of the Y breaks off from old age when you try to clean it.
3. No, the intake manifold does not need to be pulled to clean the Y fitting. You may want to pull the intake manifold to remove the Oil Trap if your car is a 1988 or later model year. The improved Oil Trap is taller and difficult for some of us Shade Tree Mechanics to remove with the intake manifold in place. I do mine without pulling the intake manifold, but some have posted that it was impossible for them to do the job without removing the intake manifold.
If the oil leak is from the right side of the engine, it is the Oil Coller Adapter leaking. They all leak with that kind of miles and time.
Before you have the rear main seal replaced. make sure the distributor is not leaking. The shaft seal also leaks with that kind of miles and time. See the 700/900 FAQ for how to replace this and my information on seal part numbers. The distributor shaft seal is not available from Volvo. If the rear main seal needs to be replaced, I would figure four hours of shop time.
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