SirDoh

Yes obviously the fluid will be renewed, but bearing in mind the general feeling that the VFR is under sprung and over damped should I start with lighter fluid than the 10W standard? I know that viscosity varies between brands. I'm going to use Motul since its available in various viscosities. Edit; Dear moderator, Please remove this thread. I've done the job and no one replied. I don't want to fill the forum up with pointless posts when there are more interesting thing to read.

Bringing it back........To restate the question in a different way.. The engine running in 15°C ambient will run between 85 and 104°. The engine running in 30°C ambient will run between 95 and 104° (assuming the same riding style) Surely that doesn't justify a different viscosity of oil. If so why?

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There is a table but its all Aprillia data, and it doesn't answer the original question which was about the base/OEM spring.

This aught to be a sticky or its really obvious and I don't know where to look. What are the Stock springs and oil in VFRs? Are they progressive? Unless I know where I start, how do I know what to fit in order to move in the right direction. Mine is a 2009 6th gen but everyone must have this question.

Yeah. I hear yah. Has anyone tried fitting the sheep with Gurney flaps?

Assumption:- the Styling department of Honda probably has a bigger budget than the Aerodynamics department. I made a video test last year, using tufts of wool to show air flow around the outside of the radiators. At low speed the air follows around the front fairing and drops into the slit in front of the radiator. It breaks up, gets confused and ends up flowing forwards, into the fairing - Very odd! As the speed increases above 40mph. The air stops being able to hug the contours. I think the air pressure out side the radiators is lowered and that allows the high pressure air being rammed in from the front to push outwards through the radiator. Has anyone from the warmer areas experimented with low pressure aerodynamics to draw air out of the radiators?

Some of us run 10W-30 and others 10W-40. Lets forget the winter part and focus on the 30 vs 40. The manual says to run 10W-40 in warmer climates. That's fine on the face of it but since all 6 gen have the same kind of thermostat, they all run at the same temperature. When the engine gets to 104°C the fan kicks in. No matter where you are on the planet and whatever the weather, the engine won't see much above that (not for very long anyway). So why 2 oils?