Suzuki calls for a 10W-40 weight oil in my late model GSX-R750.
I have been running 10W-40 syn for a while but this last time I gave 20W-50 syn a try. The motor was noticeable quieter using the heavier weight oil.
I was told that using a heavier weight oil can cause slower revving, higher temps and is not the best option and I should stick with what the manufacture recommends.
Is this true or is 20W-50 fine and I should not be concerned?
Thanks
I have been running 10W-40 syn for a while but this last time I gave 20W-50 syn a try. The motor was noticeable quieter using the heavier weight oil.
I was told that using a heavier weight oil can cause slower revving, higher temps and is not the best option and I should stick with what the manufacture recommends.
Is this true or is 20W-50 fine and I should not be concerned?
Thanks