I run Mobil 1 5W-50 synthetic oil. No extended puffing upon start for me. Only does it occassionally and only for a few seconds.
I have no oil leaks whatsoever and I still get under 2bar oil pressure @ idle, once at operating temps. I believe this is normal.
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition