So I changed my oil today, and decided to put in Royal Purple. Is there anyone else here who is/has using/used Royal Purple? Do you think it is better than conventional oil?

 

I think its as good as any synthetic oil. Whether its better or not, there are arguments for both sides.

If it works well for you, great. If not, no big deal. Plenty of other synthetics out there.

 

It's better, but not worth the extra change. Just go with Mobil 1 or Amsoil Full Synthetic if you want to go the Synthetic route. Just keep in mind, depending on your mileage, you may develop a rear main seal leak once you switch. Pretty easy fix though.

 

Amsoil sounds great, but I've heard some rather disturbing things.

I've heard, for example, that you should change Amsoil oil almost as often as any other synthetic. They claim some huge 25000 mile number or something on their website, but I've heard many reports from people who have had that oil tested, and 5w30 or 10w30 ended up being 20w50 after that many miles.

 

I've heard the same Jason, I change my oil every 3k regardless if it is synthetic or not. I realize even dino oil doesn't break down until 15k miles or so, but I'd rather play it safe and keep fresh oil in all the time. Its only 6 dollars more a gallon between Mobil 1 Full synthetic and Valvoline synthetic blend, so I don't mind spending a little extra for a little extra protection.

 

i run mobil 1 syn or royal purple with a k&n filter and cannt tell a difference in either one. i also always change my oil between 3-4k.

 

I've ran Royal purple w/ K&N filter also ,then switched to the castrol edge synthectic and royal purple oil filter, (for cost) i'll get a batter idea how everything looks when i have to do my plenum and valve cover gaskets, should be interesting.....

 

ill just throw in my .02 cents..

Synthetics are better, but worse for our engines as well...in the short run, yes synthetic will be better, but in the long run, since our motors were made to have conventional oil, it will leave a baked oil crust on the internals of the motor.

If you are going to run synthetic, you need to find a detergent to cope with the oil, so you wont have baked crust....

think about it, if some of that crust comes off, gets between piston, and cylinder wall, it can cause some problems, by scratching the cylinder walls, as well as clogging up your pick up tube quickly...

So IMHO, your best bet is to just use conventional, and change every 3K, my motor is now getting cleaner, for what it looks like, since i changed back to conventional from mobil 1, and conventional actually is giving me slightly higher oil PSI.

 

I noticed a rear main leak after my first couple of oil changes. I did not know what was used in the truck prior to my ownership but I have used synthetic since the day I bought it. Maybe this change caused it. I was wondering what your "Easy Fix" is because I am interested...but I think my old man and my girlfriends old man are more interested since they both just paved their driveways and I keep leaving spots.

 

easy fix would be to replace the rear main seal