I found this response in another thread.
Tony,
The 5W20 is made using Group IV and Group I base stocks.
We are not coming out with a 5W20, 5W30 or 10W30 API SM rated oil as these
have reduced antiwear components to protect catalytic converters. The
government thinks there is a direct relationship to the amount of poisoning
of the catalyst with the amount of additives in the oil - but does not take
into account the volatility of those ad packs nor the sealing in the ring
area.
What kind of car and year do you have?
The SM only applies to some 05 and up vehicles.
RP feels so strongly about the superior antiwear of the SL that we will
offer warranty on a 2006 vehicle using the RP SL appropriate oil if the oil
is the cause of a failure and the OEM denies warranty based on using an SL
rated oil.
Happy Holidays.
David
David Canitz
Tech Services Manager
Royal Purple Ltd
1 Royal Purple Lane
Porter, TX 77365
281-354-8600 x202
281-354-7335 fax
713-725-7207 cell
[email protected]
> > -----Original Message-----
> > From: Tony Cornell [mailto:
[email protected]]
> > Sent: Wednesday, December 27, 2006 4:42 PM
> > To:
[email protected]
> > Cc:
[email protected]
> > Subject: Royal Purple 5w20...
> >
> > I'm sure you probably cant disclose this, but can you tell me
> > if this oil is made of Grp III, IV, or V base stock? Does it
> > contain any PAO?
> >
> > Also, will you be trying for API SM certification at any
> > point in the near future?
> >
> > Thanks for your time and help.
So it looks like the auto manufacturers warranty might not pay for an oil related failure, but Royal Purple says they will. I cannot find a copy of Royal Purple's warranty nor can I find any info about them at
www.bbb.org. Anybody have a warranty issue with Royal Purple?