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09-20-2011, 04:31 PM
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CC Member
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Join Date: May 2008
Location: Chandler,
AZ
Cobra Make, Engine:
Posts: 278
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Not Ranked
When to change the oil
One more opinion question since I'm getting the Cobra ready for the driving season.
I changed my oil just before the Route 66 run which I believe was back in April so I'm coming up on six months since an oil change. I've only put about 2000 miles on it (which isn't much as far as oil goes) since the Route 66 run because of the hot weather here in the summer. Do I go by miles, time or both when determining when to change the oil? Changing the oil ain't cheap so I don't want to do it more than I need to. The oil looks clean on the dip stick and I'm using conventional Valvoline VR1 Racing Oil. The owner's manual I got with the engine is silent on how often to change the oil.
Not that I'm sensitive to oil issues or anything. 
__________________
-Sandy
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09-20-2011, 04:49 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
One Man's Opinion...
If you're not racing it, and you put about 1,000 to 1,500 miles or less a year on it, and the car spends 99% of the time snugged away in a garage... I think an oil change every other year is fine. Yep, that's right, every other year. |
09-20-2011, 05:23 PM
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CC Member
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Join Date: Nov 2010
Location: Albuquerque, N.M.,
NM
Cobra Make, Engine: 2007 BDR FR Boss 302
Posts: 210
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Not Ranked
How much oil does your motor hold? I change my oil every 3,000 miles max. If your engine holds 8 qts or so, I would go 3,500 max. I'm conservative on the oil change intervals, but I'd rather spend $50 now then $3000 minum later. |
09-20-2011, 06:17 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
once a year in the spring
Dwight
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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09-20-2011, 07:36 PM
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CC Member
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Join Date: Jun 2001
Location: Mesa,
AZ
Cobra Make, Engine: ERA #2119 289FIA
Posts: 5,380
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Not Ranked
Sandy, seems to me that I heard that racing oil does not have nearly the additives that regular road oil has. Considering that, I'd be more inclined to change it every 2000-3000 miles max, with normal highway miles. More ofter if you were to thrash the car on the track or strip. Some of the other recommendations are probably just as valid but seems like most of them live in climates with much more humidity and cold temperatures than what we have here in the beautiful AZ Desert.
__________________
Karlos
"In the Land of the Pigs, The Butcher is King"
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09-20-2011, 07:56 PM
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CC Member
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Join Date: Feb 2010
Cobra Make, Engine: N/A
Posts: 295
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Not Ranked
To maintain their warranty, Roush requires that the oil and filter be changed every three months or 3000 miles. They say that even in the winter, when little driving is done in most states, the oil oxidizes while it sits.
I think it should be changed at least as often as every six months or 3000 miles.
grybrd123
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09-20-2011, 08:09 PM
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CC Member
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Join Date: Aug 2000
Location: Glendale,
AZ
Cobra Make, Engine: SPF 468ci 550HP + 150HP NX Matching Shelby GT500 650HP
Posts: 4,209
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Not Ranked
Sandy, I have 53,000 miles on my 460. I have changed the oil about every 3000 miles regardless of the time. I also use just regular 5w30 or 10w30 whatever is on sale. Nothing special.
AZ Bob
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AZCOBRA, AZBOBS Plates & JAFMO
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09-20-2011, 10:34 PM
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CC Member
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Join Date: Sep 2009
Location: Camarillo,
CA
Cobra Make, Engine: SPF #2608, Roush 427SR T-W
Posts: 911
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Not Ranked
Suggest you change it just before it will be sitting the longest. For me in Washington State, I won't drive much in Nov-Feb so I will change it out in November. Oil will become corrosive over time and this is one of the reasons to change out your oil. If you change it out in the spring of driving season, it sat all winter long with corrosive oil. Better to keep it fresh while it is sitting in the garage.
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09-21-2011, 07:02 AM
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Senior Club Cobra Member
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Join Date: Jun 2000
Location: Gilford,
NH
Cobra Make, Engine: FFR 302 carb
Posts: 8,121
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Not Ranked
Sandy,
I change about once a year or every 6K miles.
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09-21-2011, 07:12 AM
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CC Member
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Join Date: Aug 2007
Location: Carlsbad,
Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
Posts: 2,613
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Not Ranked
Since I drive the car all year long (it is southern california after all) I change the oil and filter every 3000 miles. Averages out to every 10 months.
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Jim
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09-21-2011, 08:03 AM
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Senior Club Cobra Member
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Join Date: Jun 2003
Location: West Linn,
OR
Cobra Make, Engine: ERA #684, 428 FE, TKO600
Posts: 1,378
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Not Ranked
Since I do 5-7K a season I change oil once at mid season (Jul - Sep) and when I put the car up for it's "winter" maintenance and it's going to be sitting for long periods. 8 qt system plus filter costs about $50. Very inexpensive insurance.
DonC
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09-21-2011, 08:54 AM
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CC Member
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Join Date: Apr 2009
Location: Phoenix,
az
Cobra Make, Engine:
Posts: 848
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Not Ranked
Oil change ? My wife doesn't believe in them, she's always been perfectly happy with the oil she has. 
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_____________________
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09-30-2011, 08:56 PM
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CC Member
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Join Date: Jul 2005
Location: Carpentersville,IL & Maricopa,,
AZ
Cobra Make, Engine: ACE, 351W, 3550 Tremec, Raging(?) Red W/ White Stripe.
Posts: 2,082
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Not Ranked
__________________
SPEED WAS HIGH - WEATHER WAS NOT - TIRES WERE WET - X MARKS THE SPOT
Burma Shave 
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10-01-2011, 02:16 AM
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CC Member
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Join Date: Jan 2010
Location: Sun City West,,
AZ
Cobra Make, Engine: SPF2984 MK111, Roush 511 IR FE 8 Stack, Dynoed: [flywheel] 572HP at 6000 , 556# Torque at 4700, Bowler 4R70W Auto Transmision. Tires: Mickey T's S/R 26.0x10.0x15.0 F ,26.0x12.0x15.0 R Color, Bleck, because they told me it was Bleck, at the factory.
Posts: 1,480
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Not Ranked
Quote:
Originally Posted by RedSnake351
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Ralph, if you look at the statistics governing random exchanges between humans the probability of getting two answers alike are exponential, that's what makes this forum interesting..  tin-man
__________________
Be well, drive fast, live long 
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10-01-2011, 10:53 AM
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CC Member
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Join Date: Jun 2011
Location: Tucson,
Az
Cobra Make, Engine: Advanced Classic's
Posts: 43
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Not Ranked
I have 5 cars that I drive all year but not alot of miles, Average 500 to 1000 yearly. I change oil once a year and all of them get about 6oz's of "Lucas Engine Break-in" additive, except Cobra. It gets 16oz's due to 14 qts of oil and 2 oil filters. OUCH!
There was a few nice Cobra's at "Run to the Pines" last weekend!
Have a good weekend! Jay |
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