My Royal Purple oil analysis results are out!

[Genie47]

Check them out at BITOG.

 

Link here.

[Mojoe]

bro... errmmm... in layman's term?

[Genie47]

The wear metals are low. So the oil is doing its job. The Ca, Na and P are actually from the additives in the oil. The main concerns are the Fe, Cr and Cu.

 

The nitration and oxidation are rather high. This might be the result of the fuel dilution. The strange thing is that the viscosity @100 is increased! This oil is supposed to have a viscosity @100 around 8.5.

 

The main concern now is to solve the fuel dilution which can come mainly from piston rings that are not seated. But I have the car running past 10k already! The other factor that might lead to this is that the fuel management system is running too rich.

[Cashiertan]

can it be that your car was not run-in properly?

[Genie47]

After 10k? You got to be kidding. As suggested, it could be the fuel management whch by default runs rich. The next UOA will tell.

[Trex101]

Hi Genie, i'm no expert but i really doubt its the fuel management system because after >4% fuel dilution in the oil, the oil actually thicken up to 9.7 from 8.7 cSt? It actually doesn't make sense, could it be Lab error? Is it possible to ask Terry to reburn your oil sample again to confirm its accuracy?

Edited September 13, 2004 by Trex101

[Genie47]

He did comment that it is strange that the oil thickened up in response to the dilution. Anyway, he said he likes the oil. The protection is so far so very good for 5k and he recommends to double the OCI since the TBN is 7.0.

 

BTW, check this thread in BITOG. Got Amsoil dealer come and sabo RP .

Edited September 13, 2004 by Genie47

[Luckcent]

Did not know the RP oil is good. Have been using it for two years now and I change it every 7k.

[Mojoe]

hmmm... even more layman..

 

good to go for 10k or need a shorter OCI?

[Genie47]

Good to go 10k. The OCI was 5k. He recommends double so 10k.

[Mojoe]

[Vtim]

Good to go 10k. The OCI was 5k. He recommends double so 10k.

---

for my kind of driving, can last 10k meh

[Genie47]

You kind of driving ah? Dunno. Check with UOA. I paid him through Paypal. With the exchange rate, I paid SGD60.

[Mavvy]

Interesting..heh..

 

well.. i got the best in my car...

[Wankie]

Which RP oil is this? Been wanting to try but a little worried about it lasting 10K before oil change.

[Genie47]

5W20

[Luckcent]

RP oil is not ex$$$$ so you can change at an earlier interval.....like me.

[Wankie]

Thks.