3416 posts · Joined 2011. #3 · Oct 2, 2013. It wont do it any harm to change it and a good idea every few years or 40k. Make sure you use the right spec though, many cars use a gl4 spec oil but a lot of multipurpose gear oils are gl5 which can be too slippery for the syncros to work properly. And as ever when changing gear oiul make sure you Various models 00 models: Fiat Bravo-Rat Brava - Fiat Marea - Fiat barchetta • Coupe Fiat 15.97 0010 T 120 AA CHANGING ENGINE OIL service literature update with new oil figures. mm TYPE OF PROBLEM The oil figures given in the "Owner's Handbooks" and the Service Manuals are not consistent with the actual engine capacities I'm going to service my car in due course but am wondering if a 7 year old 1.2 is likely to need a gearbox oil change? Any particular time you should change the transmission oil? If it needs doing, how do I go about it on the 1.2? I can see guides and info for 1.6 and HGT but nowt on the 1.2 Third, to properly flush the gearbox, use one of the new gear lubricants, or a light viscosity of R&O compressor/turbine oil, filling to one-third the recommended operating oil level. Circulate under no-load conditions for 15 minutes and drain. Fig. 3: Maintenance manager taking temperature readings. South: 01202 237363. South East: 01795 342998. South West: 01803 503101. Tel: 03333 444311. Reconditioned / Re-manufactured Fiat gearboxes for most Fiat vehicles. Fitted, or collected, remanufactured and delivered. Also available from stock. Hi,I wonder if anyone can help. My gear stick has recently become quite sticky and doesn't self centre when warmed up. I am planning on changing the gearbox oil but I'm struggling to find the fiat recommended 75w/85. Does anyone know if there is an alternative I can use. Any help would be appreciated. Oct 5, 2011. #3. If Seal has failed - bearing failure will not be far behind. Also Factor in the cost of a new clutch - as it may forwell have fowled it, but not slipping yet. Ebay is a good place to look - or contact a local gearbox company - ask if they can get you the bearing and seal for a reasonable price. Ziggy. J9Y4Wt6.