The light is most likely staying on longer for three reasons...............1)a slight reduction in oil level from filling, which is fixed by adding enough oil to cover the sight glass completely when sitting on the center stand; 2) chances are the different brand oil has a slightly higher viscosity at temperature, not allowing it to drain as quickly from the valve train. Go back to Mobil 1, it has a much more uniform viscosity index at varying temperature and flows well when cold; and 3) the ambient temperature is probably cooler and engine is running cooler so that the oil viscosity is higher, again allowing more of the oil to remain in the valve train. None of this poises any real danger. The light is only indicating a low level of oil in the engine sump.
I have found the easy fix is add a 1/2 quart of oil and ride. You are not over filling when the excess oil is simply being retained longer in the valve train longer because it cannot gravity drain quick enough to the sump. Come to think of it....the excess oil consumption of the GTS may be caused by this problem. If a half quart of excess oil collects in and floods the valve train it may be being more easily pulled into the valve stem seals as they age. A slight increase in the drain orifice size may help stop this. hawke On 12/24/02 12:46 AM, "Robin Gammon" <[EMAIL PROTECTED]> wrote: > Thanks for replies from Nick & Jon. The only thing that bugs me, is there > appears to something different happening on my bike compared to previous > experience. I've now owned this bike for 2� years and done 16,000+ miles, > so I'm quite used to knowing whe the light will come on and how long to > leave it before topping up. > But, now the light is coming on and staying on as described in my original > post. So, what's different? What else can I look at? > > Robin > > On 23 Dec 2002 nicholas.threader wrote: > >> I did have the oil light on a few times like this , now i top it up until >> the oil just fills the window completely . >> Hey Robin if you get the chance to try Castrol R4 in the future , you > won't >> believe the difference it makes , well worth a try . >> >> atb Nick T >> SA#12 >> >> >> --- >> Outgoing mail is certified Virus Free. >> Checked by AVG anti-virus system (http://www.grisoft.com). >> Version: 6.0.431 / Virus Database: 242 - Release Date: 17/12/2002
