Oil Temp problem
Thread Starter
Heel & Toe
Joined: Apr 2007
Posts: 21
Likes: 0
Oil Temp problem
Hey guys, i have a 2005 c6, 6sp z51. Now what i need help on is this.
My oil temp. after letting the car warm up always idles on 210 degrees. Exactly 3/4 of the way up on the heads up display info. Now i know for a fact my car feels easily 2 times faster when the oil temp is half way while the engine temp is at normal temps. But once i hit 3/4 oil temp mark (210 degrees) my car is f@#@#kin slow! I hate it, just wanted to know if others have this problem or what. Also how would i keep the oil temp cooler?
Thanks in advance guys!!
My oil temp. after letting the car warm up always idles on 210 degrees. Exactly 3/4 of the way up on the heads up display info. Now i know for a fact my car feels easily 2 times faster when the oil temp is half way while the engine temp is at normal temps. But once i hit 3/4 oil temp mark (210 degrees) my car is f@#@#kin slow! I hate it, just wanted to know if others have this problem or what. Also how would i keep the oil temp cooler?
Thanks in advance guys!!
Team Owner
Joined: Dec 2003
Posts: 57,408
Likes: 164
From: queensbury ny
I have an 05 z51 mz6 too...
Maybe tech section will get you better response.I have a 160 stat in mine which seems to have a side effect of keeping the oil cooler too.A little tune will overcome your dilemma with the car.
Thread Starter
Heel & Toe
Joined: Apr 2007
Posts: 21
Likes: 0
dangit lol i thought tech/performance section was strictly performance. Im kinda a forum newbie lookin for help. Well what i basically wanna know is, is it normal? stock? should i get chevy involved?
Safety Car
Joined: Apr 2006
Posts: 4,254
Likes: 5
From: Anaheim Hills, Ca
There's an inlet or "intake" air temp sensor that will pull (retard) timing when it reaches a certain point to reduce the possibility of detonation. I don't know of oil temp effecting that though. You might want to have that checked out. I know thaT in warmer temperatures, my '07 feels a little different but not much.
Le Mans Master
Joined: Feb 2007
Posts: 8,514
Likes: 235
From: Currently somewhere in IL,IN,KY,TN,MO,AR,MS,AL, or FL
210 is a little BELOW normal for me. I'd prefer to see 215-220 to make sure any condensation is boiled off rapidly. You haven't said where you live but if the outside air temp is still hot that will result in a noticeable decrease in power as it warms up. I don't notice it much when the outside temp is 90+ at the start but I do notice it when the outside temp is 85. The air intake is inside the engine compartment and so it gets hotter as the engine warms. Then, as mentioned, the computer pulls the timing. Wait for fall before panicing.
Last edited by FortMorganAl; Sep 26, 2007 at 06:35 PM. Reason: Speeling
Thread Starter
Heel & Toe
Joined: Apr 2007
Posts: 21
Likes: 0
There's an inlet or "intake" air temp sensor that will pull (retard) timing when it reaches a certain point to reduce the possibility of detonation. I don't know of oil temp effecting that though. You might want to have that checked out. I know thaT in warmer temperatures, my '07 feels a little different but not much.
And i took my car in the dealer, they kept it for 2 days opened up the engine and said nothing it wrong ( i had takin it in for extremely high oil consumption)
Safety Car
Joined: Apr 2006
Posts: 4,254
Likes: 5
From: Anaheim Hills, Ca
As mentioned in another reply, the air inlet is under the hood. When your engine warms up, the air going into the induction system also is warmer. That's the reason "cold air intakes" or CAIs enhance performance. What concerns me is that you say that it is very noticeable. I only notice any degradation of power when getting on it hard after I've been in very slow traffic for a while. That's when the under hood temps are up there. Your oil temp is not the culpret. It's a indication of your engine being at full operating temperature.
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Melting Slicks
Joined: Jan 2004
Posts: 2,158
Likes: 4
From: Henderson Nevada
210 deg is cool. There are a number of issues that _might_ invoke the retarding of the spark, including low octane gas, bad knock sensor, etc. (Way too many to get the one true answer on this forum.)
However, oil temp is not the issue. Like I said, 210 is cool.
However, oil temp is not the issue. Like I said, 210 is cool.
Safety Car
Joined: Apr 2006
Posts: 4,254
Likes: 5
From: Anaheim Hills, Ca
Melting Slicks
Joined: Dec 2006
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St. Jude Donor '13
210 is OK as far as temps go. That is NOT too hot! I doubt your issue is oil temps.Think of it this way. The engine coolant is 195-220 as the fan cycles. And the whole engine pretty much reaches that temp. Then the oil is warmed by the metal pan to at least the coolant tempeture. Then add the combustion tempeture of the oil coooling the bottom of pistons and flowing through the bearings and you should always have an oil temp that is 10-50 degrees hotter than the coolant temp.
I think you may need to look elsewhere for your issues.
And BTW, my car runs better when the oil is up to full temp, and is kind of noisy when its 150 degrees or below......
Thread Starter
Heel & Toe
Joined: Apr 2007
Posts: 21
Likes: 0
I see, well i greatly appreciate all of your responses. I guess ill have to complain to the dealer. Stupid dealer also wants to charge me $100 to "service tire pressure monitor"
I mean i've run my friends c5 z06 freeways speeds and lost by 6 cars............
I mean i've run my friends c5 z06 freeways speeds and lost by 6 cars............
Instructor
Joined: May 2007
Posts: 123
Likes: 0
From: Maynard MA
My oil goes up to 280 on the track, and it is still fast as hell. I have a Vararam though, and I think that keeps it from pulling any timing.
Your performance decrease has nothing to do with the oil temp but probably more with the whole underhood temp. The air under there is hot, and so your intake air is hot. So it pulls timing.
Get a vararam, or some other intake that breathes from the front of the car, not from under the hood.
Your performance decrease has nothing to do with the oil temp but probably more with the whole underhood temp. The air under there is hot, and so your intake air is hot. So it pulls timing.
Get a vararam, or some other intake that breathes from the front of the car, not from under the hood.
Thread Starter
Heel & Toe
Joined: Apr 2007
Posts: 21
Likes: 0
My oil goes up to 280 on the track, and it is still fast as hell. I have a Vararam though, and I think that keeps it from pulling any timing.
Your performance decrease has nothing to do with the oil temp but probably more with the whole underhood temp. The air under there is hot, and so your intake air is hot. So it pulls timing.
Get a vararam, or some other intake that breathes from the front of the car, not from under the hood.
Your performance decrease has nothing to do with the oil temp but probably more with the whole underhood temp. The air under there is hot, and so your intake air is hot. So it pulls timing.
Get a vararam, or some other intake that breathes from the front of the car, not from under the hood.
Bow-Tie Guy
Joined: Dec 2004
Posts: 1,057
Likes: 30
From: Chesapeake VA
210 is a little BELOW normal for me. I'd prefer to see 215-220 to make sure any condensation is boiled off rapidly. You haven't said where you live but if the outside air temp is still hot that will result in a noticeable decrease in power as it warms up. I don't notice it much when the outside temp is 90+ at the start but I do notice it when the outside temp is 85. The air intake is inside the engine compartment and so it gets hotter as the engine warms. Then, as mentioned, the computer pulls the timing. Wait for fall before panicing.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
As far as I know there is no sensor on the C6 to pull timing for oil temperature. There are two temperature related issues that will pull timing, coolant temp and intake air temp. Since coolant temp and oil temp are related I suggest you watch your coolant temp instead. All the tables show timing being pulled at coolant temps above 187°.
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
As far as I know there is no sensor on the C6 to pull timing for oil temperature. There are two temperature related issues that will pull timing, coolant temp and intake air temp. Since coolant temp and oil temp are related I suggest you watch your coolant temp instead. All the tables show timing being pulled at coolant temps above 187°.
That can't be!
Pro
Joined: Oct 2005
Posts: 526
Likes: 0
From: Ma.
I have no heads up, but I'm always checking oil temp. My 06 a6 runs 208 to 216 on warm day. When pushed a little, goes 220-224 I think that's normal for oil. I think you want the oil temp to exceed 212 on a regular occasion to boil off condensation 
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
194°, not 187°, my mistake. Notice the ADDED timing advance on coolant temps below176°?
http://forums.corvetteforum.com/phot...a/1124/ect.jpg
And intake timing pull starts at 77° with no added advance for lower temps.
http://i56.photobucket.com/albums/g1...sparktable.jpg
http://forums.corvetteforum.com/phot...a/1124/ect.jpg
And intake timing pull starts at 77° with no added advance for lower temps.
http://i56.photobucket.com/albums/g1...sparktable.jpg