Royal Purple question???

[JesusFreak60]

has anyone used Royal Purple? I want to do ATF and rear end oil in my 02 Z71. again does anyone have this same truck (or close to) and done this? What gains can expect from Royal purple?

[gmctrucks]

I'm sure it would be good for it but the problem is getting all the fluid out of the trans not unless your convertor has a plug on it.

[merlin5577]

I only use Royal Purple, great stuff. It will serve you well.

[JesusFreak60]

Do you know if the royal purple gave you better MPG Merlin? If so, how much?

[merlin5577]

Marginal at best. Any oil that will give you a big increase in fuel economy will not be able to properly protect the engine. A number of people claim fuel eceonomy increase but in my experience and research it is psychosomatic. Most people after changing to a new oil (or air filter, or spark plug, etc...) drive differently and that is what gives them the fuel economy increase. The reason I use Royal purple is protection. It just rules.

[mbean50]

The only thing you have to remember is that once you go synthetic you cant go back. and the royal purple is kinda expensive, but i have only heard good things about it. I work at a dealership and there a lot of people who swear by it

[merlin5577]

Originally Posted by mbean50

The only thing you have to remember is that once you go synthetic you cant go back. and the royal purple is kinda expensive, but i have only heard good things about it. I work at a dealership and there a lot of people who swear by it

Sorry, that is just not true. You can swap back and forth. They are all interchangeable. And you get what you pay for.

Royal Purple lubricants are fully compatible with mineral or synthetic oils.

Royal Purple FAQs

Mobil 1 is fully compatible with conventional motor oils, semi-synthetic motor oils and other synthetic motor oils, should it be necessary to mix them.

Synthetic Oils FAQs

Red Line products are compatible and will mix with other synthetics and petroleum products.

Red Line Oil: FAQs