ROYAL PURPLE

[we2man]

Would it be alright to run royal purple synthetic in a higher mileage car even if it's never had synthetic ran in it before?

 

[~JM~]

I believe the common consensus is that a synthetic really isn't needed. I believe you would still need to add zddp or other zinc additive for your flat tappet camshaft/lifters. Its probably not a real good idea to extend the service intervals like synthetic advertises on a artificially aspirated engine.

~JM~

 

[we2man]

I believe the common consensus is that a synthetic really isn't needed. I believe you would still need to add zddp or other zinc additive for your flat tappet camshaft/lifters. Its probably not a real good idea to extend the service intervals like synthetic advertises on a artificially aspirated engine.

~JM~

 

[we2man]

What is ZDDP?

 

[~JM~]

What is ZDDP?

It's an additive. http://zddplus.com/

~JM~

 

[CGASTON]

ZDDP - http://www.zddppluscentral.com/

SYNTHETIC OIL, ROYAL PURPLE is a great oil and has zinc in it; however after a few extremely heating of the oil it viscosity begins to break down and isn't as thick as conventional oil. Oils like Valvoline Racing (50w) have zinc additives.

 

[cuda6pak]

Switching to synthetic on an older high mileage engine will almost always promote some oil leaks.