QUOTE(Gin87 @ Apr 29 2021, 01:30 PM)
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All the 5 oils above are properly certified/claimed Heavy Duty Engine Oil HDEO diesel (CI4,CJ4, CK4, ACEA E7 ,E9 ) with various truck OEMs' approvals whose detergency/dispersancy properties requirements are very much higher that of a properly certified/claimed ACEA A3B4 PCMO meant for Light Duty Truck.
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I've been using these oil cuz it these were recommended by off-road otais in my area, and they say no need to use Euro 5 cuz it's like using Ron 97 in kancil.. But as I read more about it, the difference between normal diesel & Euro 5 is the sulfur content, in short, "cleaner" diesel..
May I know what is the Euro spec of current 'normal' diesel fuel here other than the Euro 5 diesel on offer?
Euro 4 of 50 ppm sulphur ??
I used to hear horror stories of later model diesel truck engines having very pricy fuel injectors being damaged by Euro 2 (?) diesel fuels then.
Not sure if current diesel engines and its injectors are totally fine with current 'normal' Euro 3-4 diesel fuel.
Is it a waste of money for current later model trucks using Euro 5 diesel, which is supposed to be friendly providing good cleaning to fuel injectors ? Or it makes no difference, in practice ?
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From my observation, at 5000km, these oil tend to show soot "particles", by particles I mean something like a full-stop sized particles, too bad I don't have pictures to show..
At 5000 km oil change interval, any of the above mentioned mineral HDEO 15W40s would be good for 10,000-15,000 km usage no sweat. If I were you, I would ignore any semi-syn or full-syn HDEO for any oil change interval below that of 10,000 km.
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Fuel economy increased drastically moving from API CH-4 Castrol Mini Truck to API CI-4 oil, Rimula R4X & Delo Sports was good, the worse is Valvoline Power Commonrail, noticeably heavier engine when reaching 5000km & there's "chunks" of things in the oil when drained, not particles, chunks..
Speaking of Fuel Economy, I think you should seriously consider this Caltex Delo 400 MGX 15W-40 API CJ-4 (Mineral) whose UOA from @e-lite above displays tonnes of friction-reducing additives like Moly and Boron.
Not sure whether the other semi-syn or full-syn HDEOs would contain Moly and Boron too.
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And I was planning to try full synthetic HDEO like Shell Rimula R6 LM 10W-40 API CK-4 or semi Shell Rimula R5 LE 10W-40 API CJ-4
At 5000-10000 km oil change interval, I would give them a miss as it is not value for money.
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But as I was researching for the oil, I stumbled upon BITOG forums that explains the difference between light duty diesel engine oil & diesel HDEO, regarding RPM load, additives effect on catalytic converter, turbo lubrication etc.. This leads to the decision to follow manufacturer's recommendation on using ACEA B class engine oil, and at about 4810 km, the oil looks like this
[attachmentid=10863726]
not bad in my opinion, no full-stop sized soot particles, just fine-sized ones..
[attachmentid=10863726]
not bad in my opinion, no full-stop sized soot particles, just fine-sized ones..
I would agree with your position and Bitog's (where I used similar username) that your Hilux Revo diesel engine is good with the ACEA B spec'ed PCMO oils.
Your continuous usage of the current Helix Protect 0W30 A3B4 at much higher mileage of say, 8000-12000 km would be interesting suggesting a B oil is fine.....
However, at this preliminary stage of full-syn Helix Protect blotter, I'm unimpressed really with its blotter 'performance' thus far vis-a-vis that of a properly spec'ed HDEO CI4,CJ4 (E7,E9) mineral oils.
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This leads to the decision to follow manufacturer's recommendation on using ACEA B class engine oil, and at about 4810 km, the oil looks like this
[attachmentid=10863726]
https://forum.lowyat.net/uploads//attach-96...73564_thumb.jpg
not bad in my opinion, no full-stop sized soot particles, just fine-sized ones.
First time using ACEA B class oil btw
The used oil at 4810 km looks good on the dipstick.[attachmentid=10863726]
https://forum.lowyat.net/uploads//attach-96...73564_thumb.jpg
not bad in my opinion, no full-stop sized soot particles, just fine-sized ones.
First time using ACEA B class oil btw
Question: Are the diesel soot particles and combustion contaminants having agglomerated into larger/heavier size lumps , and getting stucked/sticked onto internal engine components and its surfaces while NOT being adequately cleaned off by detergents with a view of aggressively dispersing the suspended soot/contaminants around the body of lubricants?
Hence, the dipstick used oils looks 'clean'?
This post has been edited by zeng: Apr 30 2021, 01:01 PM
Apr 30 2021, 12:34 PM

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