I'm not sure that's always the case - I always felt that the recommendations were on the light side for the 400EX, being an air cooled engine that runs high oil temps.When an oil is recommended by the manufacturer, they go to great lengths to figure what lives best in a certain engine under a certain application ...[/b]
Originally posted by Jumbo747@Aug 1 2004, 04:08 PM
so switching to M1 after 4 oil changes is bad?
From what I have always heard you shouldnt switch to synthetic untill your motor is fully broke in. On cars I switch over on the first oil change at 3k miles since a 6 or 8 cylinder motor is considered broken in after 500 miles but in fact with todays piston rings they have shown to be broken after only about 100 miles. On ATV's and bikes I have heard from dez and others that you shouldnt switch untill you get about 100 miles or so on them but I just switched over on the first oil change at about 5 hours only because I believe that as fast as we are turning these motors 10k rpms and even a little more and as much as we work the throttle constantly changing RPM's I believe the motor is fully broke in, in as little as 20-30 miles or 1 to 2 tanks of fuel. I could very well be wrong and Im sure dez will disagree with me but this is my opinion on the topic. On the same note I myself have yet to see a motor that had issues even being broke in on synthetic. I have had quite a few friends that have built nitrous motors for mustangs and camaros pushing 500hp off the bottle and a couple have broke them in on Mobile 1 and Royal Purple and none of them had any problems with the rings not seating properly. Of course by that same way of thinking they also believe to break the motor in the way you plan on driving it and many if not all of them have sprayed a 200-300 shot of nitrous on the first drive out on the street with less that 5 miles on the motor, lol. Once again I believe with todays rings there is little to no need for a long drawn out break in period but then again, what do I know. B)Originally posted by Jumbo747+Aug 2 2004, 12:09 PM--><!--QuoteBegin-Jumbo747@Aug 1 2004, 04:08 PM
so switching to M1 after 4 oil changes is bad?[/b]![]()
you making fun of my name or something? :lol:Originally posted by Lason@Aug 2 2004, 11:37 AM
mumbo jumbo