UOA Results: Conoco Hydroclear 5W30

[Genie47]

OK attached is the UOA report on Conoco Hydroclear Super All Season Diamond 5W30.

 

For some strange reason, the Si levels have not gone down. I will be checking on the intake system. As long as this is not solved, the bearing wear is going to be there no matter how good the oil is. I'll be check out the grommets and all the possible areas where a leak will occur.

 

As usual, anyone interested in Terry's comments just PM me.

87128_NGEE1_E140-35083-1642.pdf

[Genie47]

See BITOG link for ongoing discussion.

 

 

 

http://theoildrop.server101.com/cgi/ultima...ic&f=3&t=002427

[Kohks]

hi genie,

 

so from the Fe and Sn number are quite high, when compared to cxxxxxe and RP, is it due to Conoco or it is just your car ?

 

i was thinking of trying out Diamond but from the numbers it is not comforting to use.

[Genie47]

As you can see, my Si number is high. It could be the abrasive action of the Si that caused the bearing wear (Sn). I've been consistently getting high Si numbers since RP. I have to investigate my intake. Then again, there is no moly in this oil. The wear might be lower if a dash of moly is present just like RP and cxxxxxe.

[Genie47]

I took out my plugs to check because someone got a hunch that it could be fuel additives. True enough, the plugs are coated with a thin layer of red-brown deposits. Signs of fuel additive usage.

 

Now here is the problem. I have not been using fuel additives. Zilch. Been filling up with JB petrol. Mainly Caltex Gold RON97. I suspect they up the octane rating with additives. The not so healthy kind. It is getting into the oil and causing abnormal wear.

[Octopus]

Oouh.....guess this means bad news for MCF'ers topping up petrol in JB?

 

But could it be other problem which is causing the spark plug to get a 'red-brown' deposits? Maybe wrong heat range? Too rich fuel? etc? I wonder how's the petrol quality in S'pore.....

[Blackyv]

now i worry,

i just bought 1 bottle of Conoco Hydroclear SAS diamond 5w30 from Project/MY yesterday..

 

i was thinking due to my driving style, good engine oil is a waste for my usage of less than 12K of milleage/year and i change oil every 6mths, so all i need is a good oil to last me around 5-6k of usage every 6mths... is this conoco good enough?...

[Genie47]

Its actually good enough. Look at all the Ca, P and Zn. All these are antiwear additives. More than the RP or cxxxxxe but the only thing lacking is the Mo which is seen consistently in the RP and cxxxxxe.

 

The problem I'm getting is the Si in my oil from the air which I am still trying to figure out where and the additives in the petrol.

[Genie47]

If it is too rich, it will be black. If it is too lean, you get white deposits. According to many, additives in fuel will give you red-brown to purple deposits. This does not harm spark plugs but prolonged usage will cause washout into the oil and these additives will attack the engine components.

 

Now here is the deal. To prevent fuel washout which includes the additives you have too........use thicker engine oil. This might explain why the cxxxxxe 5W40 shows the least wear.

[Blackyv]

heng ah...

 

actually, was thinking of RP($39) or conoco($35), which would u reco infact? maybe next round will try out RP....

[Genie47]

For all intents and purposes, RP looks superior from my UOAs. cxxxxxe is good if you are looking for a 40wt oil.

[King]

thank you bro for all the info.

i buy you coffee next time we meet

[Jamesgetz]

could the high levels of Si be due to sediments (sand, clay) in the JB petrol? have heard such crap can be found in petrol if the kiosk storage facility is not properly maintained...

 

then again, shouldn't such crap be removed by the car fuel pump filter?

[Genie47]

That is why I say it cannot be already in the petrol. The filter will take care of it. FYI, the RP and cxxxxxe still use SG petrol. Still get those Si in it. I'm pluggin all the leaks so to speak. Tightening every screw/nut whatever for the intake system.

 

The additive thing seems quite true. Caltex in JB is either Silver or Gold. Silver is the red nozzle and is RON92. It is a leaded fuel and the nozzle cannot fit into the fuel port of my car. The only choice is Gold which is RON97. I think they are bumping up the octane number with fuel additives. Malaysians say that EssoMobil, Projet and Caltex got vroom. I guess it is the additives. The so called bo power petrol is Shell and Petronas. I will be switching to Shell regular to see how things fare.

[Maded]

no wonder u out huntin for a torque wrench?

[Elantrahatch]

Do keep us updated on JB's Shell.

[DarkLord]

This oil analysis thing is really interesting...

[Kohks]

been using JB Shell 97, so far fuel consumption seems to be marginally worse than Singapore Shell 98. but seems to be same as Singapore Shell 95 or Caltex 95.

 

i think i will check my civic vti spark plugs later to confirm the condition.

 

btw did your fuel consumption improved with conoco diamond?

 

i think i will still go ahead with the diamond oil change next month.

 

kohks