Hi. Ive just come across 2 litres of castrol driveline syntrax universal 75w-90 (api gl4/gl5) in my shed that i bought for an old mx5 gearbox, but i never used it.Since it cost me £11 per litre i was wondering if it would be suitable for 2010, 1.2 petrol sport gearbox. Thanks.

Looks the right grade.

75w-85 Selenaia.