Hi,
Johnny - You said;
"Off topic from this post, but looking at you signature, was wondering why you use Castrol R4 Superbike oil instead of one the fine Mobil 1 motorcycle oils."
An OT reply:
As you may be aware I always use what I think is the best lubricant for the task after careful analysis. The Brand and price matters little to me - performance does
The Castrol R4 Superbike 5W-40 does not have an equivalent lubricant in the Mobil range. I actually drained out the excellent Shell Advance Ultra 4 10W-40 used by the dealer. I liked the better viscosities (cold/hot & HTHS vis.)and the better availability of Castrol R4 here in the Tropics.
As well, the Burgman has the same lubricant in the gearbox (another factor with the viscosities) and I put Castrol's excellent Syntrax 75W-90 (GL5) in the geared drive line
The Castrol products are more expensive than their competitors products
Both of my youngest sons use the Shell lubricants in their many "hot" Suzuki and Honda Sports bikes
In my previous BMW R100RS I used GC 0W-30 and Syntrax too
As a youngster my family used to race Nortons, Triumphs, AJS and Matchless bikes - they all used Castrol R 30 and R40 (castor base synthetic). So a little tradition for me too I expect
As an aside, I also had connections to Bert Munroe who raced "The Worlds Fastest Indian" - a DVD to watch and enjoy even if you don't like bikes!