Originally Posted by corrado007
Not sure about that, I really don't know too much about oil yet.
The manual for my CBR F4i motorcycle calls for an oil change every 8K miles. I was surprised when I looked it up, I figured it would be more frequent since the engine and transmission share the oil.
I am very sure about that. 2000 miles and my shifting gets notchy. This is with a reputable oil. Motul 5100 semi-synth. 8000 miles is way too long of an interval for a super sport, regardless of what the manual says.
Regarding oil, I did a little reading.
Our 2nd gens require an API 'SM
' grade engine oil with an "energy conserving
" designation. The recommended oil viscosity grade is 5W30
, which gives best fuel economy and good cold starting. 10W30
can be used in a pinch, but should be changed to 5W30
at the following oil change.
' in the API designation stands for 'service
' which means gas engine vehicles.
' in the API designation stands for the revision of the API standard. 'M
' came out in 2004.
Shell Rotella T Triple Protection
carries the most current API 'SM
' grade and 'CJ-4
' grade designations (amongst others). It appears to be geared towards heavy duty applications. It has additives to protect diesel particulate filters against build up.
' in the API designation stands for 'commercial
' which means it's made for heavy duty diesel truck applications.
' means it is the most current API standard. 'J-4
' was introduced in 2006.
Rotella T Triple
comes in 15W40
grades. It appears to be a 'conventional' oil.
comes in a 10W40
grade. It is a 'synthetic-blend' oil.
comes in 5W40
only. It is a 'full-synthetic' oil.
The conclusion, Shell Rotella T oils meet the Toyota's requirement of an SM
oil.... however, there is no 5W30
viscosity grade which Toyota recommends. Rotella T oils are also geared more for heavy duty commercial vehicles with regards to their additives. From my understanding, a specific SM
'energy conserving' grade oil will be better for fuel economy.