Castrol magnatec...??

[Ada7]

Ok, i\'ve been on the Rotary Art web site looking at the Royal Purple oils. I\'m i missing something here, cause they all seem to be Synthetic and your recommeding Mineral!?!?  :xconfused
Adam

[TonyBlair]

I\'m no expert, but this is my take on the issue.

I think there\'s something about synthetic oils whereby they don\'t burn well (rotary engines burn a bit of oil in the rotor chambers) and these synthetic oils leave deposits inside the rotor chamber - which is what you don\'t want. And that\'s why mineral oil is the preferred, since it burns up in the chamber and doesn\'t leave much, or any, deposits.

However, some synthetic oils burn without leaving deposits, and I think Royal Purple is one of them.

Gary should be along to give you a better explanation.

 :wave

[Ada7]

I\'m no expert, but this is my take on the issue.

I think there\'s something about synthetic oils whereby they don\'t burn well (rotary engines burn a bit of oil in the rotor chambers) and these synthetic oils leave deposits inside the rotor chamber - which is what you don\'t want. And that\'s why mineral oil is the preferred, since it burns up in the chamber and doesn\'t leave much, or any, deposits.

However, some synthetic oils burn without leaving deposits, and I think Royal Purple is one of them.

Gary should be along to give you a better explanation.

 :wave

Ok, cheers Tony. Your not a bad guy after all  :p
Adam

[88GT-R]

Conventional Fully Synthetic oil is not designed to lubricate a combustion chamber, causing a build up of carbon. Royal Purple is among a minority that have designed their oils to be burnt cleanly.

John

[banned advertiser]

The fact is you wont get better engine protection than using a fully synthetic oil, Unfortunately like most things there are several manufacturers and some not as good as others.
Royal Purple has been designed with double esters which is the ultimate protection and burns very cleanly, where as others will leave a residing in the engine, using semi syn will get round the residure but wont provide best engine protection.
Double ester will also keep all the rubber rings nice and supple, where as most other oils will eventually make them brittle and perrish.
Using the recommended mineral oil will not stop your rings going brittle, it burns clean thats all,
There are some tech posts in oilmans section, if you want to get boogled by science, very interesting and basically says what Ive just said. If your going to use a fully syn oil make such its double ester.