Been analyzing my oil analysis results

[Genie47]

I will post some data.

 

RP 5W20 saw pretty low wear even though I stressed the engine like hell. Below are numbers for lead (Pb), iron (Fe), copper (Cu) and tin (Sn) in ppm.

 

RP 5W20

Pb 7 Fe 10 Cu 9 Sn 7

CLTR 5W40

Pb 2 Fe 13 Cu 11 Sn 5

Conoco

Pb 5 Fe 24 Cu 13 Sn 11

 

The RP 5W20 saw 5k mileage, CLTR 5W40 saw 7k mileage and Conoco is 9.5k mileage. Longer oil service will lead to more wear so it looks OK but the jump up in Conoco's case is a little too high.

 

Antiwear levels, RP and Conoco are equal. The zinc (Zn) and phosphate (P) are indicative of the ZDDP antiwear additive. Both are high but calcium (Ca) for Conoco's case is the highest. But Conoco is lacking in molybdenum (Mo). RP and CLTR's trump card.

 

RP 5W20

Zn 1500 P 1123 Ca 2213 Mo 87

CLTR 5W40

Zn 993 P 845 Ca 1847 Mo 41

Conoco

Zn 1443 P 1135 Ca 3146 Mo 1

 

Comparing with the data above. Seems like the engine likes something with molybdenum in it together with the Zn. It seems to like SAE40 oil (which engine doesn't?) but I experienced poorer fuel economy.

 

With this, I will go back to RP 5W20 to see what better results I can squeeze out. Those on RP 10W30 are already on something good.

[Kopikao]

I intend to send my rp ?W30 oil (7+k on it) for oil analysis. So might need your help later. Going to test Fuchs Titan oil next one.

[Skoder]

whaaa.... we have a cybot here man.... (forgive my limited capacity to fully understand your stats... )Just replying this post makes me feel already....

GM should get you in immediately as their Chief Engine Officer...(CEO)

you should be in the car business!!!!

Thanks for your help in oil change post! My gratitude....