Changed Oil In 2023 Bonneville Then Realized New Oil Is Mineral

Assuming the mineral meets the required spec I wouldn't worry about it but just change it a bit earlier than with SS/FS oil. If it doesn't meet the minimum spec required I'd change it. A big plus of synthetics is they stay in grade longer. If it falls

 

Keep it for your trip, some sources are of the opinion that running a bike on mineral oil when new is good for the engine in that it lets everything bed in better, then at first oil change switch to fully or semi synthetic

 

But to add....
@Jammin Jones IF it doesn't meet the required spec then I would be draining it back into it's original container and putting it firmly back on their counter!
Tell them it's secondhand now and the reason you've brought it back for credit plus you want a goodwill gesture, reference their incompetent parts person.

Yesterday, I was fortunate to go for breakfast at the cafe fastened onto a Triumph dealer. Whilst stirring my tea I looked at the x3 shims and alternator gasket I'd just bought. what, that gasket is snapped in the bottom corner. Mistakes do happen but it's how it's resolved that matters, replacement gasket given no issues.
Fortunately it was only next door but I wouldn't have been a happy bunny if I'd have got all the way home, 20+ miles away.

 

Any mention of JASO MA on the oil container?

 

Triumph Spec calls for fully or semi synthetic....here in the UK they spec the Castrol Brand.....thats what I stick with....there are cheaper brands out there but not for me.

I take it it was not a Triumph Parts Store you used.

To me I would drain it and replace the oil filter

The only time these engine have straight mineral oil in them is for the run in period.

I use Semi Synthetic of the Castrol Brand....the type formulated for motorcycle engines.

Theres a thing...the oil the guy sold you....was it a car engine based oil???

Its quite different to bike engine oil due to the clutch.....car engine oil can have additive's that can make the clutch slip.

 

Out of interest, which one was it?

https://maximausa.com/collections/4-stroke-oils

 

That mineral oil looks fine to me, bike specific and exceeds the latest JASO MA2 spec bit it 's your choice and you can't put a price on peace of mind.
Triumph recommend Castrol, yeah OK.
When I had my FZR1000 years ago, Yamaha recommended Motul. When I asked a tech guy at the Bikeshow why they recommended Motul specifically he replied, "they sponsor our race team sir". Just sayin'.

 

I think you should consider buying your oil elsewhere. Those clowns don't know hay from a bull's foot, it seems to me.

 

I know for a fact there are good dealers and bad dealers but poor customer service and product/model knowledge is the main reason I went down the DIY route years ago with maintenance and servicing. I've had both great and rubbish service from dealers in the past, some from guys who really knew their stuff and some from those who clearly didn't know their a*se from a hole in the ground. Very frustrating!

 

The world operated just fine for over a 100 years on good 'ol mineral oil. And refineries today make it just about as good as the syns. Honda doesn't even recommend syn in my '19 Goldwing with changes @ 8k. And filters only every other oil change.
Don't get all caught-up in the hype. JMHO.