RAVENOL 75W 90 API GL4 GL5 LS IS A SYNTHETIC GEAR LUBRICANT SUITABLE FOR MANUAL TRANSMISSION. CITROEN C1 MANUAL TRANSMISSION GEARBOX MANNOL 75W 90 SYNTHETIC OIL 2L API GL4 GL5 FLUID. CITROEN C1 1.0L VTR / C1 1.4HDI RHYTHM / C1 1.0L VTI FLAIR / C1 1.2L PURETECH / C1 1.4L HDI / C1 1.0L VIBE MANUAL TRANSMISSION.