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#1
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Driving style and tranny
I'm curious to find the relationship between driving habbits and how long people's trannys last. I've always been one to drive the hec out of my car and give it a good rev. I've heard that in general, transmissions shift smoother and run cooler at higher RPMs. So wouldn't having a led foot be a good thing for an SVX owner? I've read numerous posts on this issue. Some comfirming what I've stated, and others with people saying "don't race the car from a stop." So what's the bottom line on this issue?
Dave.
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Out for good. Last edited by DavieGravy; 06-04-2002 at 08:23 PM. |
#2
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Well I know that when I floor the gas pedal, the tranny temp shoots up accordingly. But if I get up to speed normally, I can drive for half an hour at highway speeds and not get much over 160 degrees.
KuoH |
#3
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Transmission temperatures alone are not a fair gauge of how much work is being done by the transmission.
When I am driving hard on the 110 freeway from LA to Pasadena (ever done 110 on the 110? ) my transmission temperature is in the 160F to 165F range. As soon as I reach Pasadena and drop out of hyperspace my transmission temperature will jump almost immediately to 185F, even higher if I get caught at the stoplight at the off-ramp. The harder I accelerate the more heat my transmission generates, but the harder I accelerate the fasater I am going, and the faster I am going the larger the amount of cooling air is rammed through my transmission cooler. At times I have found that accelerating 20mph faster will result in a decrease of my transmission fluid temperatures, even before I have reached a steady speed. Mmmm.... 110 Pasadena freeway in my SVX.... |
#4
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is it just me, or do all subbies run really hot? My friend has a wrx and he was getting 160 - 170 while doing 100mph
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#5
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I don't know if 160-170 is considered hot, but the stock cooler is in the radiator and the thermostat is designed to keep the engine at 170. As Beav said, the thermostat keeps the engine at the desired temperature, but I would guess that the radiator is not too much cooler than that on an average summer day. The B&M cooler seems to be able to keep the temps lower, but only if you bypass the stock cooler completely.
KuoH |
#6
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#7
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Why do I suddenly have this mental image of some college student standing next to his trannyless SVX in the parking lot banging his books against his forehead?
KuoH |
#8
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Right now I'm looking at one of those little fold-out brochures from LUBEGARD. A bar graph shows 175 as low heat (desirable), 195 as normal, 220 & above as a danger zone. Anything 260 & above predicts failure within 15K or less. Ron.
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Good s**t happened. 69 was worth the wait. '92 stock semi-pristine ebony - 160K '96 Grand Caravan - 240K '01 Miata SE - 79K '07 Chrysler Pacifica - 60k - future money pit. |
#9
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#10
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Re: Driving style and tranny
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I don't see any problem in .the way you drive, as long as it's not in D and not in traffic. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#11
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Re: Re: Driving style and tranny
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By the way, the reason why I started this thread is because I managed to char my transmission fluid in about 20k. I assume it could have been uneaven tire wear from front to rear, up untill I changed my tires. But I realized I may need to change my driving style. Thanks, Dave
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Out for good. Last edited by DavieGravy; 06-05-2002 at 06:54 PM. |
#12
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Look at it this way, if the trans is made to slip slightly during shifting in order to be smooth it's only a simple matter to surmise that the higher the load and speed you impose on it during that shift would be more detrimental.
Why would this even be a question? "Would it hurt more if I hit my finger with a one pound or a two pound hammer?"
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#13
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Ron.
__________________
Good s**t happened. 69 was worth the wait. '92 stock semi-pristine ebony - 160K '96 Grand Caravan - 240K '01 Miata SE - 79K '07 Chrysler Pacifica - 60k - future money pit. |
#14
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Harvey you are spot on. No one with the exception of Beav has any idea of what they are talking about.
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Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! |
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