Royal Purple - Hps Or Xpr?

[hop1308]

Hey guys, I did a bit of searching around but couldn't find specific answers for this;

What would be a more suitable oil in a stockish R34 GTT - Royal Purple HPS or their new XPR oil?

It seems the XPR is a on up from the HPS, specifically for performance racing, does that mean it would not be suitable for a daily jap turbo?

This is what their website has to say; (useless)

http://www.royalpurpleconsumer.com/right-synthetic-oil/

Thanks

[mr skidz]

I use hps 10w 40 In my turbo territory as its supposed to be the more daily driven oil choice with more detergents than the xpr which has higher zinc and less detergents but has a boiling point of up to 400degc from what I read from there data sheet. Both are at least a group 4 which is the more important factor here I reckon.

[JGTC]

The ultra high performance oils (XPR, Motul 300V competion, Redline Race series) are very good in terms of dealing with high heat, high strain conditions

however this is only 1 of a 3 part equation - the are;

1. Heat tolerance - pure performance

2. Cleaners, detergents and additives - ongoing engine maintenance / protection for cold starts

3. Oil longevity (suitability for longer time/km intervals)

You have to remember racing cars differ to street cars in the fact that they;

- oil is constantly changed out every event - meaning it does not require a complex detergent/additive package to clean the bearings etc.

- constant changing also means the oil does not need to last very long time/kms wise

So the reality is the best oil for track is not the best oil for street

What you will need to settle for is an oil with a moderate heat/sheer tolerance, but also have a detergent package + resistance to acidity to last and clean over a 5000, 10,000 or 15,000km interval

If you still wanted to spend upwards of $80 my picks would be Redline (normal series) 10W40, Motul 8100 Xcess or Amsoil 10w40 (Motul and Redline are available at most Autobarns)

Good options under $50 are Penrite HPR10 (when on sale), Gulf Western Syn-X 3000, Castrol Edge 0/10w40, Valvoline SynPower 5w40

An great medium is the Gulf Western Syn X 6000 if you can find them in Autobarn, or buy direct - they are very close to your full Group V(5) ester based oils like Amsoil, Redline, Motul 300V, but at a fraction of the cost, around $50-60 i believe

Hope that helps, everyone wants the best for their ride, just need to adjust your understanding of oils to make a more informed decision

[hop1308]

thanks heaps for the informative post. I guess i'll be sticking with the HPS instead of the XPR, i dont know why, i just don't have the heart to put a non royal purple oil in my car anymore haha

[Ben C34]

Advertising is why

[tridentt150v]

Its a bit like the imported vs boutique vs domestic beer argument. People swear that one is ssssoooo much better than the other.

I use Penrite and my car is fine, but thats me!!! ADM FTW

[niZmO_Man]

I use Penrite and my car is fine, but thats me!!! ADM FTW

This. Why not give your cash to Aussies for a similar (and slightly cheaper) product?

[Ben C34]

Advertising is why