作者: yoshida (feel it) 看板: Oil
標題: MOTUL 無限級的意義
時間: 東吳機研站 Wed Dec 18 05:35:03 2002

轉錄與修改自 Motul 億轉 網站

一般的油品均含有黏度指數的添加劑以維持住其黏度,
這類添加劑在機油處於極端工作狀況下時會降低其效能、
降低機油黏度指數及壓力。
由於酯基的使用,他本身的特性可以幾乎不使用黏度添加劑,
將抗壓度延伸,使引擎降低磨耗、
油壓穩定,防止機油在引擎內被燃料稀釋 ....


個人看法:

excellence也是有他的黏度只是台灣億轉用似是而非的名字來命名,
原油已簡述如上,油本身添加少量or無黏度添加劑,
可以讓表現更好(其實外國主網站寫這段話是寫在所有的汽車用
Motul 300V 底下, Motul300V汽車用的總共分成五種油品,
所以這其實應該本來就是酯基的特性而不是只有excellence才這樣),
而台灣的公司貨汽車油好像只有 300v competition 在賣,
以我本人的猜測, excellence 應該是那五
種的其中一種最高檔的油品.
億轉網頁是寫說原場針對台灣的氣候特別改良,不過我本身有點懷疑就是.
不過之前有傳言說 excellence 跟 competition 是同樣的東西,
這是不負責任的說法, 用起來根本就是兩樣的東西...
而且excellence在一些pro的重車騎士(RC45工廠賽車板)
使用之下覺得真的比factoryline 更好(供各位參考)
(factoryline已經是motul設計給機車使用的最高等級機油),

而motul億轉也強調excellence在拉轉上的特性,使用過的人也表示的確很好拉,
所以我也猜測他不會是高黏度的.


節錄國外網站的原文:

Oil film resistance:
Conventional multiple grade mineral and semi-synthetic motor oils,
as 100% synthetic super-multigrade lubricants (5W40, 5W50, 10W60...)
use additives to boost their viscosity.
These viscosity additives tend to loose efficiency when submitted to
extreme conditions, which translates into a drop of viscosity and oil pressure.
Since the 300V's of the MOTUL MOTORSPORT line benefit from the natural
viscosity of synthetic ester basestocks, they need very little of such
additives, or none (*).

The ASTM D 4741 official test of HT/HS* (High Temperature High Shear)
viscosity measures the viscosity of lubricants at very high temperature
(150°C / 302°F) and shear (1 000 000 s-1).
This test is considered to be a good model of the fluid's state
when exposed to extreme shear and temperature as found in an engine.
The higher the benchmark, the best the oil film keeps up its viscosity,
hence its resistance to high stress in hydrodynamic rating.
Tests prove the best results are achieved with a high viscosity
grade (50 or 60) at high temperature, and without viscosity boosters.


----

寫的好累,不過看到之前一直有人誤解無限級的意義,還是硬著頭皮寫完....


--


         ATTITUDE   IS   EVERYTHING

--
※From: 東吳機研 scumotor.com.tw yoshida From r148.70.mypili.net.tw ...
      一個玩車人的天地/各車系專屬區/GP SBK TIS賽事討論區/進口車討論區/