2.5 using oil

[BrewinProf]

My 2025 also seems to be using oil. I've put in 2 qts in 5000 miles. No sign of drips on the garage floor, or around the gear shift gasket you all are talking about.

 

[Protonhound]

I'm no engineer but have done enough mechaniking in my life to know a bad design when I see it. The case joints are all sealed with gaskets that compress when torqued down to provide a proper seal. Then Triumph decides to put not one but two o-rings at the lowest part of the bike obviously hoping that whatever seeps past the first one will be stopped by the second one which makes no sense. The o-rings aren't even compressed but just snug in the opening. Maybe originally the rubber compound used was different and actually sealed it much better and then there was a change in supplier and this problem creeped in. I have a feeling that this will be a recurring issue for most of us that are actually aware of it and I wonder if anything has changed with the recent models.

 

[Protonhound]

My 2025 also seems to be using oil. I've put in 2 qts in 5000 miles. No sign of drips on the garage floor, or around the gear shift gasket you all are talking about.

After riding stick your finger up underneath that side cover on the left and you'll be able to feel the sensor and one of the bolts. If it's greasy/oily then that would be it and it only seeps out when the bike is running and cooks off on the hot case.

 

[BrewinProf]

Thanks. I'll give it a good cleaning and then check it out after a ride.