JASO MA, MA2 只是一個規範,有通過這個認証的不代表就是重機專用油,這些機油一定還會送API的認証,所以用到汽車上也絕對不會有問題,用到重機上只是可以確認離合器不會打滑,那用汽車用的機油也不是說一定會打滑,也許有/也許沒有,大多數可能感覺不出來,唯一可以說的就是它沒有這個認証,所以不知道。就像先前大家常提到的Shell Rotella T6是重型機具及車輛用油,它也是通過 JASO MA認証,要說它是重機專用油嗎?
http://s02.static-shell.com/content/dam/shell-new/local/business/rotella/downloads/pdf/rotella-t6-brochure.pdf
大家說重機專用油應該說是專為重機再特別處方的機油,還是可以用在汽車上的。
https://mobiloil.com/en/faq/product-faqs?View=20&Page=2
節錄如下,大家可以自行了解。美孚這麼大的油廠,養了這麼多專業的人員,為了各種用途的車種特別設計建議用油,比起單純符合API規範的汽車用油,這些應該更是大家騎乘上需要的啊,如果如K大說汽車用油用起來都沒問題也不會把車騎壞,那用這些油理論上是不是更讓人放心。還是大家覺得美孚說的都是豪洨......
What does Mobil 1 Racing™ 4T 10W-40 offer that Mobil 1™ for cars does not?
Mobil 1 Racing™ 4T 10W-40 is designed for sport bikes. Most of these bikes have multicylinder/multivalve engines and use a common sump, which means the engine oil lubricates the engine, transmission and wet clutch. So unlike Mobil 1 for cars, Mobil 1 Racing 4T 10W-40 motor oil
has no friction modifiers, which could lead to clutch slippage. The motorcycle oil also has more phosphorus/zinc for enhanced wear protection at high engine speeds and high loads. In addition, Mobil 1 Racing 4T 10W-40 has a high performance dispersant/detergent technology for better high-temperature performance and engine cleanliness. Mobil 1 Racing 4T 10W-40 is also offered in a different viscosity grade than Mobil 1 for passenger cars. .
How is Mobil 1™ V-Twin 20W-50 motor oil different from Mobil 1™ for passenger cars?
Mobil 1™ V-Twin 20W-50 fully synthetic motor oil is designed for air-cooled, large-displacement bikes. Because of their design,
these engines can generate very high localized oil temperatures and high overall bulk-oil temperatures. As you know, a typical air-cooled V-twin's rear cylinder gets a lot hotter than the front cylinder – it's a matter of airflow.
When it's hot out and you're stuck in traffic, the oil temperature in your bike climbs rapidly. Above about 250 Fahrenheit, conventional motor oil is going to break down. Mobil 1 V-Twin 20W-50 fully synthetic motor oil is good to above 300 Fahrenheit. Like Mobil 1 Racing™ 4T 10W-40, Mobil 1 V-Twin
has high levels of phosphorus/zinc and the same high-temperature detergent technology for superior wear protection and engine cleanliness, even at elevated oil temperatures. With Mobil 1 V-Twin oil, you can go the full length of the manufacturer's recommended oil change intervals with ease.
價格有差異很大嗎? 有重機的各位高額關稅都買單了..
汽車用的5W-50:
http://goods.ruten.com.tw/item/show?21308041021495
4T用的10W-40:(一罐貴50nt)
http://goods.ruten.com.tw/item/show?21308041030574
4T用的20W-50:(一罐貴90nt)
http://goods.ruten.com.tw/item/show?21516018347154
至於一罐600-1000以上的某M牌酯類油個人覺得就完全沒必要,自認沒有辦法把車發揮到極限不需要用到賽車級的油。
上述非廣告,只是發表個人想法,騎車就是要放鬆,放心; 依重車手冊說用什麼油就用什麼油,如果手冊沒規定那麼去參考一些大廠的重機油也是不錯的選擇。以我重機通勤來說,每天騎乘上下班共110km; 中壢到大園是市區路段,這種天氣只要等個紅綠燈風扇就會因為溫度到啟動點就開始轉,大園到八里是西濱路段,風扇完全沒有啟動的機會,水溫大約3~4格就是80C以內,八里到關渡就是市區路段,風扇又是轉不停,熱到旁邊的小綿羊騎士都很後悔靠我太近(因為FJR的散熱風是從側邊排出的)。我個人是認為台灣重機通勤使用環境是蠻糟的,特別如果有時候要去台北市區辦事,塞車加上被小綿羊圍繞大家熱在一起,,,
但是我覺得依手冊6000km(我是5000km)換油是一件必要的事,每次換完油變檔及引擎加速都會變的順暢,我不相信大家沒有感覺的。我也相信10000km不換油引擎也不會壞,但是我不會去試,因為5000km後我就有點受不了換檔及加速的遲滯。