While piston skirt and land deposits were similar for both oils, the candidate delivered a greater advantage in the critical piston grooves region. In our opinion, this control of deposits in the piston grooves and valve region can be attributed to the salicylate detergent.
Engine cleanliness plays a key role in maintaining the power and efficiency of the motorcycle. Sludge formation can lead to blocked oil ways, which in turn could hinder lubrication and result in engine wear and ultimately, engine seizure. The ratings of the engines at the end of the field trial show good and comparable sludge and varnish control between the candidate and reference oils.
Oil consumption, which can be affected by both viscometric and additive effects, was monitored during the field trial by measuring the change in oil volume during each oil sampling. Due to the higher volatility of the SAE 5W-30 candidate oil, higher oil loss could have been expected relative to the SAE 10W-40 reference oil. However, comparable oil consumption data was noted for both oils. This demonstrates that the right additive balance can improve oil consumption through maintaining engine cleanliness and thermal stability.
The motorcycle engine oil also has important roles to play in the lubrication of the gear transmission system and in durability protection to prevent gear pitting. At the end of the field trial, the gear transmission system of each motorcycle was also rated based on light, medium and heavy spalling classification.
The ratings of the gears in the candidate and reference oils were comparable, despite the fact that the candidate oil was thinner. In addition, the candidate oil was formulated with a lower phosphorous content, which could be of value to some applications being deployed by motorcycle OEMs.
Delivering performance comparable to the reference The SAE 5W-30 candidate oil, formulated with superior and unique motorcycle oil additive technology, delivered engine cleanliness, deposit control and durability comparable to the thicker SAE 10W-40 OEM Genuine Oil reference oil.
In addition, the candidate oil proved its lubrication capabilities when tested in a hot and humid climate and under extended ODI. This demonstrates that using a carefully balanced combination of advanced additive systems makes is possible to move to a lower viscosity grade without compromising performance.
By carefully balancing advanced additive systems, motorcycle formulations not only deliver advanced engine, clutch and gear protection, but also catalyst compatibility, fuel economy credits and performance riders can feel.
LINK
www.infineuminsight.com
These results can likely be attributed to the formulation balance, which optimises antiwear surface effects, the salicylate detergent, which also provides wear credits, and the star polymer viscosity modifier, which maintains adequate oil film thickness.
Minimising deposits, especially on the valves and pistons, is essential to prevent valve/ring sticking and abrasive wear. In terms of intake valve rating, the candidate oil showed significantly better performance compared to the reference oil.
LUBE MAGAZINE NO.136 DECEMBER 2016 27
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69
