10w-30 for rx8
#1
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10w-30 for rx8
I live in pakistan were temperature varies between 2 degree celsius to 50 degree celsius around the year.
I read in the the manual that the recommend lube for rx8 is 5w-20 but this is not available here. I usually fill my car with Caltex Havoline Formula which is 10W-30. Am i killing my engine?
Can somebody please also explain what this 10W-30 or 5w-20 means.
I read in the the manual that the recommend lube for rx8 is 5w-20 but this is not available here. I usually fill my car with Caltex Havoline Formula which is 10W-30. Am i killing my engine?
Can somebody please also explain what this 10W-30 or 5w-20 means.
#2
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10W-30 is the smart choice there. It's a thicker oil- the numbers refer to the viscosity (lower is more runny). There are two numbers because the oil viscosity changes with temperature. 10 is the most runny it gets, 30 is the thickest it gets. There's a school of thought among RX8 owners that the 5W20 requirement is to meet emissions standards but the engine actually survives longer using thicker oil. I personally use 10W-30 or 10W-40.
#3
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See here: http://en.wikipedia.org/wiki/Motor_oil
#4
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Look at the chart in the first post in the following thread:
https://www.rx8club.com/australia-new-zealand-forum-37/rx-8-series-ii-owners-manual-engine-oil-161616/#post2749156
5w20 is recommended in the US and Canada because of fuel economy requirements.
Ken
https://www.rx8club.com/australia-new-zealand-forum-37/rx-8-series-ii-owners-manual-engine-oil-161616/#post2749156
5w20 is recommended in the US and Canada because of fuel economy requirements.
Ken
#5
Look at the chart in the first post in the following thread:
https://www.rx8club.com/showthread.php?p=2749156
5w20 is recommended in the US and Canada because of fuel economy requirements.
Ken
https://www.rx8club.com/showthread.php?p=2749156
5w20 is recommended in the US and Canada because of fuel economy requirements.
Ken
Anything less than 10W-40 is asking for trouble. Read "Lets look at expos over 100K Renesis Motor" thread
Use your 5W-20 in your paper shredder
Last edited by kennyfrc1; 01-14-2009 at 08:00 AM.
#6
Registered Zoom Zoomer
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Exactly right. Same thing for my Jeep Patriot 'beater.'
I do use 5w-20 in my generally cooler area, but also do pre-mix in Summer.
Here's the short form insight:
"The SAE designation for multi-grade oils includes two grade numbers; for example, 10W-30 designates a common multi-grade oil. Historically, the first number associated with the W (again 'W' is for Winter, not Weight) is not rated at any single temperature. The "10W" means that this oil can be pumped by your engine as well as a single-grade SAE 10 oil can be pumped. "5W" can be pumped at a lower temperature than "10W" and "0W" can be pumped at a lower temperature than "5W". The second number, 30, means that the viscosity of this multi-grade oil at 100°C (212°F) operating temperature corresponds to the viscosity of a single-grade 30 oil at same temperature. The governing SAE standard is called SAE J300."
I do use 5w-20 in my generally cooler area, but also do pre-mix in Summer.
Here's the short form insight:
"The SAE designation for multi-grade oils includes two grade numbers; for example, 10W-30 designates a common multi-grade oil. Historically, the first number associated with the W (again 'W' is for Winter, not Weight) is not rated at any single temperature. The "10W" means that this oil can be pumped by your engine as well as a single-grade SAE 10 oil can be pumped. "5W" can be pumped at a lower temperature than "10W" and "0W" can be pumped at a lower temperature than "5W". The second number, 30, means that the viscosity of this multi-grade oil at 100°C (212°F) operating temperature corresponds to the viscosity of a single-grade 30 oil at same temperature. The governing SAE standard is called SAE J300."
Look at the chart in the first post in the following thread:
https://www.rx8club.com/showthread.php?p=2749156
5w20 is recommended in the US and Canada because of fuel economy requirements.
Ken
https://www.rx8club.com/showthread.php?p=2749156
5w20 is recommended in the US and Canada because of fuel economy requirements.
Ken
Last edited by Huey52; 01-14-2009 at 08:06 AM.
#9
I'm terminally stupid tonight (hopefully just tonight)....
#14
Go with 10W-40 winter and 20W-50 summer.
At 100C most 10W-30 oils are THINNNER than a 5W-30. Read the spec sheets
#16
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Polish-American Hammarrrr
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Also, to the OP, you might want to consider Idemitsu 10W-30 Rotary oil. It's synthetic, but it's supposedly formulated specifically for rotary engines, as the name implies...
#25
Zoom-Freakin'-Zoom
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so far i have run, stock. 5 / 30 syn. royal purple.. good stuff..
then 5 / 30 dino. it works.. and now 10 / 40.
i am happy with what i am running right now with where i live..
btw, i cant tell the difference in how the motor runs. or how it feels.. but i do look at temp gauges often..
beers