QUOTE(zeng @ Jun 15 2024, 11:05 AM)
Shell Helix Ultra 5W40 (MB229.5)
Oil Life : 14,184 km
8 months oil life thus far since Sept 2023.
ODO :380,740 km in
Car model: Toyota Avanza 1.3L
Note:
Top up at 12,000 km about 0.8L of mineral Shell Helix 15W40 (Yellow packing, SN) -due to timing cover oil seal leaks.
Shell Helix Ultra 5W40 (MB229.5) + Helix HX5 15W40Oil Life : 14,184 km
8 months oil life thus far since Sept 2023.
ODO :380,740 km in
Car model: Toyota Avanza 1.3L
Note:
Top up at 12,000 km about 0.8L of mineral Shell Helix 15W40 (Yellow packing, SN) -due to timing cover oil seal leaks.
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Oil Life : 15,278 km
9 months oil life thus far since Sept 2023.
ODO :381,834 km in
Car model: Toyota Avanza 1.3L
Note:
Top up at 12,000 km about 0.8L of mineral Shell Helix 15W40 (Yellow packing, SN) -due to timing cover oil seal leaks.
Samples were taken hot within 10 minutes of engine shut down after a 20-25 minutes drive.
42 hours blotters:
a)With back light
b)With NO back light
The Centre Zone (of about 8 mm diameter) remains quite similar as previous 14K km sample above.
The aureole zone/perimeter annulus (of about 10 mm diameter size) is emergent and is cause for caution as it indicates commencement of agglomeration phenomenon of contaminants. The good news is it isn't darkened yet.
Comparing against previous 14,184 km blotter sample it is nice to note that the deterioration of current 15,278 km blotter Diffusion Zone and darkened zig-zag outer edge and translucent halo zone is mild and manageable and is no cause for alarm for now imo.
As usual, there is no indication of coolant contamination of used oil.
Overall there is no intention on my part for immediate replacement of this used oil and we will see how it goes for another thousand or two km.
Specifically, the undesirable further deterioration of darkened or blackened aureole zone is of concern and it is something to look out for in future blotter spot sample of this 'rojak' engine oil.
Jul 5 2024, 10:47 AM

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