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#1532960 - 07/15/09 02:54 PM
TX heat and oil
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Registered: 01/24/08
Posts: 114
Loc: TX
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I've got a 2008 Mazda3. I live in Houston where it's been around 100º everyday. It won't start cooling off till mid October. My car has only had 5w-20, mostly Pennzoil Platinum. I've had good UOAs. Last oil change was done at the dealer because it was too hot for me do it. This dealer features Quaker State products. I guess they put 5w20 QS according to the window sticker. My question is would there be any advantage to running a 5w-30 during this hellacious Texas summer? or should I just continue 5w-20 year round? The car runs just fine, has 36,000 miles and I the A/C is usually on full blast anytime I'm in the car.
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#1532965 - 07/15/09 03:02 PM
Re: TX heat and oil
[Re: maximus]
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Registered: 05/25/05
Posts: 419
Loc: DFW Texas
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It's only been 100 there? I need to head down your way to cool off a bit! 
_________________________
"If stupidity got us into this mess, then why can't it get us out?"
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#1532966 - 07/15/09 03:02 PM
Re: TX heat and oil
[Re: Footpounds]
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Registered: 01/24/08
Posts: 114
Loc: TX
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It's only been 100 there? I need to head down your way to cool off a bit! Hehe, it peaks to about 103.
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#1532973 - 07/15/09 03:07 PM
Re: TX heat and oil
[Re: maximus]
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Registered: 09/01/08
Posts: 486
Loc: Southeast Texas
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I have asked a different version of this question, you will get about a 50/50 split of opinions. I have to stay with 5-20 in my Honda (warrenty), but as soon as its out, I will immeadiatly switch to 5-30. Thicker IS better in TX.
Just spent the past weekend in D-FW, and then back to the Gulf Coast. D-FW a degree or two hotter, Houston clearly FEELS hotter. 95% humidity, 100 degrees...Terrible.
PS: travelling to COOL Canada and NY in two weeks!
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#1532975 - 07/15/09 03:10 PM
Re: TX heat and oil
[Re: gfh77665]
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Registered: 05/12/08
Posts: 1665
Loc: Lehigh Valley,Pa
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I have asked a different version of this question, you will get about a 50/50 split of opinions. I have to stay with 5-20 in my Honda (warrenty), but as soon as its out, I will immeadiatly switch to 5-30. Thicker IS better in TX.
Just spent the past weekend in D-FW, and then back to the Gulf Coast. D-FW a degree or two hotter, Houston clearly FEELS hotter. 95% humidity, 100 degrees...Terrible.
PS: travelling to COOL Canada and NY in two weeks! You guys in TX must be getting all of the heat this year.Up here were having the wimpiest summer i`ve ever seen!
_________________________
2005 Lexus RX 330
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#1532978 - 07/15/09 03:13 PM
Re: TX heat and oil
[Re: lexus114]
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Registered: 09/01/08
Posts: 486
Loc: Southeast Texas
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No worries for us Texans. Summer will end in just 4 or 5 short months from now. I think Fall comes Dec 28th, Winter Jan. 3rd, then Spring on Jan. 11th.
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#1532993 - 07/15/09 03:27 PM
Re: TX heat and oil
[Re: lexus114]
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Registered: 02/01/09
Posts: 1303
Loc: Texas
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I wouldn't do anything different because of the heat this summer. Its not a significant difference, really, when you think of it as a percentage of engine operating temperature. I never ran anything but xw30 oils in my cars from the 70s until just a couple of years ago and never had an engine that didn't last a *loooong* time. If a 1960s engine using 1970s / 1980s quality 10w30 oil can run 260,000 miles, then a modern engine on modern 0w20 should last longer than you want to keep the car that its in! You guys in TX must be getting all of the heat this year.Up here were having the wimpiest summer i`ve ever seen!
I'm a native Texan, and I don't mind the heat. I love it in fact, I HATE cold weather and start getting uncomfortable when the lows drop into the lower 70s. What's really starting to bug me though is that we've had no significant rain for a year and a half, but we're *still* having to suffer with higher than normal humidity. I went out to far west Texas (I live in Austin) and the high temps were exactly the same- ~100-105F, but the low humidity out there felt *wonderful*. On top of that, its actually raining from time to time out in the desert and they're not in super-extreme-double-secret drought like we are in Central TX :-(
_________________________
1966 Dodge Polara 440/A727 1969 Dodge Coronet R/T 440/A727 1999 Jeep Cherokee 4.0/AX15/NP231 2005 PT Cruiser 2.4/41TE
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#1532996 - 07/15/09 03:29 PM
Re: TX heat and oil
[Re: gfh77665]
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Registered: 06/13/08
Posts: 98
Loc: DFW, TX
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No worries for us Texans. Summer will end in just 4 or 5 short months from now. I think Fall comes Dec 28th, Winter Jan. 3rd, then Spring on Jan. 11th.  QFT I'm running 5w-20 for two years now in my 08 xb. So far so good.
Edited by A_A_G (07/15/09 03:29 PM)
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#1533004 - 07/15/09 03:37 PM
Re: TX heat and oil
[Re: A_A_G]
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Registered: 05/25/05
Posts: 419
Loc: DFW Texas
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I'm running PP 10w-30 in my Tacoma. No worries here. It's Texas, it's SUPPOSED to be hot. That's most Texans belief.
_________________________
"If stupidity got us into this mess, then why can't it get us out?"
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#1533006 - 07/15/09 03:39 PM
Re: TX heat and oil
[Re: A_A_G]
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Registered: 07/15/06
Posts: 1195
Loc: Magnolia, TX
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I would be more concerned with the tranny and differential fluid viscosity than the engine oil viscosity this summer.
Yes it is hot and I don't like it. Thank goodness for air conditioning.
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#1533012 - 07/15/09 03:49 PM
Re: TX heat and oil
[Re: INDYMAC]
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Registered: 02/09/06
Posts: 6416
Loc: Shreveport, LA
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I live in Shreveport but they let me cross the border every morning to work in Jefferson. 5W20 is sloshing away in my Fit. PS, Louisiana is no cooler. Matter of fact, Shreveport appears to be 3 degrees hotter (100 vs 97) than Jefferson at the moment.
There's tons of people out there running 20 weight in all those Accords and Civics and the like on the road.
_________________________
2002 Honda CR-V EX AWD 2009 Honda Odyssey EX-L 2009 Honda Fit Sport
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#1533014 - 07/15/09 03:50 PM
Re: TX heat and oil
[Re: gfh77665]
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Registered: 06/05/09
Posts: 308
Loc: Texas
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No worries for us Texans. Summer will end in just 4 or 5 short months from now. I think Fall comes Dec 28th, Winter Jan. 3rd, then Spring on Jan. 11th. LOL, you said it man. Nothing like wearing shorts and a tank top on Christmas day. I'll take the Texas heat over a northern winter any day of the week. I can cool off quicker than I can warm up. Can't go tubing when it's cold either. And if you live in Texas.. going tubing is a mandatory event at least once a summer. It's 103 right now here at the house in San Antonio.
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#1533018 - 07/15/09 03:55 PM
Re: TX heat and oil
[Re: BrianWC]
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Registered: 02/01/09
Posts: 1303
Loc: Texas
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There's tons of people out there running 20 weight in all those Accords and Civics and the like on the road.
And Rams, Crown Vics, F-150s, Chargers, 300s, PT Cruisers, Avengers, Fusions, Tauruses, Challengers, Mustangs.........
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#1533022 - 07/15/09 04:01 PM
Re: TX heat and oil
[Re: AdRock]
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Registered: 10/09/04
Posts: 5216
Loc: Farmington New Mexico
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Ah.. I don't miss the humidity(native Texan just moved in December ). It is in the high 90's everyday here where I work in Farmington NM . but at night at my house in Durango Co it gets down to the low 50's. I don't have air conditioning nor 400 dollar+ electric bills anymore. Just open the windows after the sunsets and the inside goes from 83 to 62 in a couple of hours with a simple attic fan  Eat your hearts out fellow Texans http://www.wunderground.com/cgi-bin/findweather/getForecast?query=81301 As for the oil, there is no advantage in going to a 5w30. The 5w20 can handle the heat just fine I ran it all over Texas but mostly driving around San Antonio and to Corpus Christi.
Edited by Bryanccfshr (07/15/09 04:04 PM)
_________________________
Best quote I have seen this month. "At least I dont street race in a Yaris"
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#1533023 - 07/15/09 04:03 PM
Re: TX heat and oil
[Re: 440Magnum]
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Registered: 02/09/06
Posts: 6416
Loc: Shreveport, LA
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There's tons of people out there running 20 weight in all those Accords and Civics and the like on the road.
And Rams, Crown Vics, F-150s, Chargers, 300s, PT Cruisers, Avengers, Fusions, Tauruses, Challengers, Mustangs......... Exactly! And if it runs okay in all THOSE poorly designed cars... Just kidding! 
_________________________
2002 Honda CR-V EX AWD 2009 Honda Odyssey EX-L 2009 Honda Fit Sport
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