i need help
as far as i know
this model of the thunderbird requires an engine oil of 20W40 grade

and this new thunderbird twinspark requires an engine oil of 15W50 grade

unfortunately i've lost my service manual and i have no clue what grade oil is recommended for my thunderbird 2007...

till now my mechanic was putting 20W50 Total engine oil.
Before that when i used to get my bike serviced at the RE workshop, they used to put in Veedol engine oil; i don't know what grade.
Can anybody plz tell me what is the recommended grade of engine oil with JASO and API ratings and a preferred oil brand as well.



.The distributor said only 20 litres available
and i just poured 300V in my bike
.

Comment