16-12-11, 09:20 AM
I looked into this a lot because bike-specific oils in Spain are stupid expensive. Try 75-80 euros for 4 ltrs of Castrol fully synth!
For years I've been running Carrefour own-brand 5w-50 fully synth auto oil, which reputedly comes out of the Mobil One production facility in France. No clutch issues. Gear change is like hot knife through butter. 5ltrs for 25 euros. I opted to switch to fully synth at around 18k miles when I moved here 'cos it's 'kin hot in the summer.
I would stay with semi-synth at that mileage on yours. In fact, I'd probably stay with it regardless because it's frequency of change that's more important. Since we service at 4k miles, semi synth is plenty good enough. Your Mobil One 10w/40 looks like a good buy in that case.
For years I've been running Carrefour own-brand 5w-50 fully synth auto oil, which reputedly comes out of the Mobil One production facility in France. No clutch issues. Gear change is like hot knife through butter. 5ltrs for 25 euros. I opted to switch to fully synth at around 18k miles when I moved here 'cos it's 'kin hot in the summer.
I would stay with semi-synth at that mileage on yours. In fact, I'd probably stay with it regardless because it's frequency of change that's more important. Since we service at 4k miles, semi synth is plenty good enough. Your Mobil One 10w/40 looks like a good buy in that case.