06-14-2021, 03:35 PM
This question is aimed soley at people who have used Rotella in their CB1100s.
I have used T4 15w40 dino oil with great success in my Nighthawk 750 (inline 4) and Shadow 750 (VTwin).
Honda recommends 10w30 for both of those bikes, but the Vtwin definitely seems to prefer the T4 15w40 over the Honda 10w30, ie, smoother shifts and quieter engine. The Nighthawk doesn't seem to care either way.
The CB1100 is very similar to the Nighthawk. I'm currently using Honda 10w30 in the CB1100, but I'm thinking of going with the 15w40 T6 on my next oil change.
I was initially considering the T4 in the CB1100 too, but according to Shell, the T6 15w40 flows better at cold temps than the T4, and has better shear protection.
I like the idea of a full synthetic in an oil cooled bike.
Since I live in Texas and never ride when the temperature is below freezing, I think the 15w40 should be fine, but I'm curious about the 5w40 too... I'm wondering if there would be any benefit to the 5w40 besides just the increased flow at low temps.
From what I have seen, both the 5w40 and the 15w40 Rotella oils have a weight of around 15 at 200 F, so it probably won't make much of a difference either way... But I seem to recall a thread where people said the 5w40 made the engine a bit noisy.
Anyone with experience who could shed some light on the subject? Thanks in advance!
I have used T4 15w40 dino oil with great success in my Nighthawk 750 (inline 4) and Shadow 750 (VTwin).
Honda recommends 10w30 for both of those bikes, but the Vtwin definitely seems to prefer the T4 15w40 over the Honda 10w30, ie, smoother shifts and quieter engine. The Nighthawk doesn't seem to care either way.
The CB1100 is very similar to the Nighthawk. I'm currently using Honda 10w30 in the CB1100, but I'm thinking of going with the 15w40 T6 on my next oil change.
I was initially considering the T4 in the CB1100 too, but according to Shell, the T6 15w40 flows better at cold temps than the T4, and has better shear protection.
I like the idea of a full synthetic in an oil cooled bike.
Since I live in Texas and never ride when the temperature is below freezing, I think the 15w40 should be fine, but I'm curious about the 5w40 too... I'm wondering if there would be any benefit to the 5w40 besides just the increased flow at low temps.
From what I have seen, both the 5w40 and the 15w40 Rotella oils have a weight of around 15 at 200 F, so it probably won't make much of a difference either way... But I seem to recall a thread where people said the 5w40 made the engine a bit noisy.
Anyone with experience who could shed some light on the subject? Thanks in advance!