Turkish Airlines Miles&Smiles - TK 41 JNB to IST Lounge Access

We will be flying TK 41 from JNB to IST in Business and wanted to know what lounge they use in JNB? Also on arrival we will be going on to FRA with a 2 1/2 hour connection. Is that enough time to use the lounge in IST? Thanks

TK uses South African Airways' Baobab Lounge at JNB. Your layover at IST should be enough to pop into the lounge.