Royal Purple

[79 Spitfire]

Any problem with running Royal Purple in these old sleds?

[jdjason]

james i run that in all my sleds less smoke cleaner burn no nasty black drips from the pipes were they couple together besides its not much more expensive than other grades of oil

[The S Man]

Is Royal purple synthetic? The reason I ask is that a long time ago I was told not to run synthetic oil, or I should say if the sled is going to sit for long periods of time not to use it. The reason being is that the oil will completely sluff off the metal parts and leave them un protected. If this is right or wrong i don't know personally.
But what I have always wondered, why are people so worried about it now? Remember years ago you ran the sleds for the season them put them away for the year with little or no precautions for the storage.And they always ran great the following year. I don't remember any problems we had with all the sleds we have owned in the past. Just kinda funny, I too am guilty of takeing every precaution now also.