5w30 or 10W30?
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Mazdaspeedgirl
Resident Autocrosser
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- 99 10AE MX-5 | 2016.5 CX-5 GT
Don't know what the summer weather is like in Seattle, but if I were you I'd stick with 5W30 year round. Some of us who live in hot summer states could get away with 10W30, but there's really no point since the weight at operating temperature is still the same.
Some interesting info on oil weight/content:
http://www.vtr.org/maintain/oil-overview.html
If anything you should keep the weight the same as the manufacturer's recommendation and worry about the BRAND of oil you are using. When you see the specs on oils listed at the bottome of that page, it should give you an idea of what's good. I just wish Amsoil was available here in Lubbock. Good stuff. (thumb)
Some interesting info on oil weight/content:
http://www.vtr.org/maintain/oil-overview.html
If anything you should keep the weight the same as the manufacturer's recommendation and worry about the BRAND of oil you are using. When you see the specs on oils listed at the bottome of that page, it should give you an idea of what's good. I just wish Amsoil was available here in Lubbock. Good stuff. (thumb)
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Some years (02 for one) of proteges recommend 5w20 for some reason. Switched back to 5w30 after the first couple changes adn realized that 03's were 5w30. I should probably watch brands of oils more but usually just go for the cheapest oil change. currently got a 4 pack deal at Tire plus for $45. I know I'm just a cheap a##. Anyway I've heard lots of good stuff with both mobil 1 and Amsoil. If you want to spend the dough, they are definitely worht it. Since I usually get my oil changed every 3-5k, I usually don't worry about it as the oil is getting changed fairly quickly.
spacemonkey
Member
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- Mazdaslow
$45...damn...you can save almost $30 by changin your oil yourself. Include the oilfilter and my total is about $22.
I use Mobile1 10w30 mainly cuz it says "new vehicle formulated" but I dont think it matters down hear in florida. The manuel says 5w30 has a longer temperature range. But it never get cold enough in Florida to warrent using 5w30 so I stuck with 10w30 (what they sell here). Have anyone noticed that 5w30 on the mobile1 bottle says "older vehicle" formulated? Dont know how the weather is like in seattle but if you want to be safe go with 5w30.
I use Mobile1 10w30 mainly cuz it says "new vehicle formulated" but I dont think it matters down hear in florida. The manuel says 5w30 has a longer temperature range. But it never get cold enough in Florida to warrent using 5w30 so I stuck with 10w30 (what they sell here). Have anyone noticed that 5w30 on the mobile1 bottle says "older vehicle" formulated? Dont know how the weather is like in seattle but if you want to be safe go with 5w30.
In the Owners manual it shows the temp ranges for the oils..
5W30 from -30C to 35C
10W30 from -25C to 40C
These are approximates looking off of the page in the manual.
It's on Page 8-13 of the 2003 owners manual.
5W30 is a good all round general purpose oil, flows easily, don't forget oil also cools the engine..
I use Castrol Syntech 5W30
5W30 from -30C to 35C
10W30 from -25C to 40C
These are approximates looking off of the page in the manual.
It's on Page 8-13 of the 2003 owners manual.
5W30 is a good all round general purpose oil, flows easily, don't forget oil also cools the engine..
I use Castrol Syntech 5W30
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spacemonkey
Member
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- Mazdaslow
Wow...that is super cheap. So cheap that I would be skeptical. Where did you get this deal...at jiffy lube? Is it a full sythetic? Im always parinoid about letting people change my oil cuz I have no clue if they are going to scam me.jlanger said:
The temperature difference between 5 and 10 is negligible. both work fine, even in cold weather. 5 protects a few degrees colder than 10, check the back of the bottles for the difference. Both are fine for year-round use, as long as you are going synthetic. For "dino juice" old-school oils, the narrower the coverage band the better.
oil
5W30 for the winter and 10W30 summer
I feel that a good quality dino oil like Pennzoil,Chevron or Castrol GTX is just fine if you change your oil on a regular basis with a quality oil filter like Wix every 3 to 4 months or 5000miles (3000k).
If you like to run your oil for 6 months or more - then go synthetic.
5W30 for the winter and 10W30 summer
I feel that a good quality dino oil like Pennzoil,Chevron or Castrol GTX is just fine if you change your oil on a regular basis with a quality oil filter like Wix every 3 to 4 months or 5000miles (3000k).
If you like to run your oil for 6 months or more - then go synthetic.
