Question: best oil for the (about the same) price: Quaker State 5w40 or Pennzoil Platinum Euro L 5w30 Requirements: low LSPI risk and low intake valve deposit risk in an American TGDI engine where either a 30 or 40 grade would be acceptable. *Or said another way, LL01 vs LL04, non-dexos vs dexos2, MB229.5 vs MB229.51, A3B4 vs C3, SP vs SN.
(If I am reading the bottles correctly, only the dexos, MB and API details are actual approvals, all others mentioned are simply "formulated to meet or exceed".)