I've used the SIP stuff at 3% for the last 4000 miles in a standard TS1, a lot of which was flat out on the motorway. No problems but I haven't had the top end off since. I have to say that whatever oil I've used over the years, I've never noticed poor running as a result, or an increased propensity to seize.
That said, I was chatting to the lad who does my MOTs a couple of weeks back. He's an old racer of 2 stroke bikes and he was telling me that in the late 70s he was part of a team that tested the then new fully synthetic oils. Their brief was basically to run the engines [they were bikes and apparently one Series 1 Lammy :freak: :freak: ] to destruction at a 1% mix. They had comparable machines running on the standard oils of the time which I presume were mineral.
When the engines were split at the end of the trial he said that the wear on the cranks and top ends on the synthetic run engines was next to nothing whereas the the non-synthetic were worn out with noticeable ridges in the crank pins and bearings. He's been a convert to synthetic oils ever since.
However, given the cost of fully synthetic oils, even if running at say 2% rather than 3%, I take the view now that the top end and the crank will need rebuilding/ replacing at some stage anyway on a highly tuned Lammy. Synthetic oil will probably not postpone this for any length of time so I'd rather take the risk of a cheaper oil
between both Tony (lubetech) and the forum admin a deal has been agreed for Tony to join the forum list in dealers, advertise his products and in return offer members a discount on bulk orders of oil, watch this space
