My son is going to change the oil/filter on his recently acquired '86 Turbo. I don't know anything about that engine. Is this a simple "do-it-yourself" project, or are there any caveats to consider? Thanks in advance.

 

Remove the belly pan (if the car still has it) to reach the drain plug.

The easy way to remove the oil filter is with a "socket" - like this one
If the car has the correct oil filter, there is a check valve in there, and some oil will spill out when you change it. But it's easy to clean up.

 

Something that helps minimize oil-filter spillage (there will still be plenty either way)

Take a long punch/screwdriver and hammer it into the top of the filter before you break it loose...this will let air into the filter which will help oil drain out.

 

Myth.

 

+944

The oil filter check valve is a rubber flap - puncturing the top of the filter does nothing to move that flap, so no extra oil will "drain out".

 

Seems to work for me, but I don't use Porsche-branded filters, I use the Mahle black ones. Dunno if those have the valve.

 

I'm pretty sure the Mahle filters have the valve. OP, you shouldn't ever use a filter without an anti-drainback valve. Stick with Mahle or OEM, both are available online for <$10. Otherwise, you have a lag in oiling during cold cranking. That's bad news, especially for a 951.

 

I just changed my oil with a Porsche oem turbo filter and tried the screwdriver method.Left it for an hour,then came back and took the filter out.Not a drop spilled.It worked for me.

 

The only way to have no oil spill is to undo the oil cooler line (at the cooler) and drain the filter out that way. Let it drain for at least an hour. I haven't tried puncturing the filter to see if that helps it.

This is on a 968, but I'm sure it's the same with a 951.

I agree that puncturing alone does nothing.

 

OEM style filters have a anti drain back valve. Poking a hole does nothing. When I change my mahle filter, I don't poke a hole, nor does oil spill out. When I cut the filter open to check for bearing material the can is full of oil.

There is NO need to poke a hole.