Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › api CD or CH-4, CI-4 what oil can i use ? Tagged: api, oil This topic contains 0 replies, has 1 voice, and was last updated by Tomas 1 year, 9 months ago. Creator Topic December 27, 2021 at 9:18 pm #993235 TomasParticipant Hello. I have MITSUBISHI s4s engine 1998 in forklift, service manual says use api CD engine oil, can I use api CH-4 or CI-4 instead of api CD ? Thanks. Creator Topic You must be logged in to reply to this topic.