C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1990 l98 engine oil temp??

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Old Oct 15, 2002 | 06:26 PM
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Default 1990 l98 engine oil temp??

while cruising around saturday i noticed my engine oil temp was at about 110 maybe 120 ambient air temp outside was 60 degrees , does my oil temp sound correct??? thanks guys, engine h2o temps and other guages seem to all work fine
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Old Oct 15, 2002 | 06:44 PM
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Default Re: 1990 l98 engine oil temp?? (guywade)

usually oil temp runs close to water temp so I would say your oil temp gauge is reading wrong or sender is bad.
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Old Oct 15, 2002 | 06:46 PM
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Default Re: 1990 l98 engine oil temp?? (guywade)

110-120F?
thats too low

Mine avg about 180-190 F, my gauges dont even register below 150F for oil.
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Old Oct 15, 2002 | 08:01 PM
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Default Re: 1990 l98 engine oil temp?? (guywade)

mine reads Lo {digital Dash} if below 150 or 140 or so (don't remember when is starts to register) , oil runs 195-205 with the engine fully warmed; oil temp lags water temp up to 195 or so... on really hot days water CYCLES 220-230, OIL @195 -200... around town on a hot day in traffic the water will be above 220... with the oil (Mobil 1 of course) @ around 200. pull out on the superslab & the water drops to 190-195 the oilw ill run just under 200 F
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Old Oct 15, 2002 | 08:58 PM
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Default Re: 1990 l98 engine oil temp?? (Shark ssn591)

:cheers: Oil should run around 20 degrees warmer than water, except in mountains and under severe loads when it can be 40 + above water

Any chance you have the dash selector on metric? Just kidding :D

Probably a bad sensor, not something wrong in the oiling system. How are the pressures?

Jack
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Old Oct 15, 2002 | 09:20 PM
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Default Re: 1990 l98 engine oil temp?? (guywade)

My Oil temp has always lagged behind the water temp since I bought ordered mine new. I have new sender and it still is always 20 to 30 degrees lower than water temps. even more on really hot days when water gets to 260 level in heavy stop and go DC traffic.
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Old Oct 15, 2002 | 09:53 PM
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Default Re: 1990 l98 engine oil temp?? (corvette1990)

:cheers: Don't mean to alarm you, but I think you may have a bad sensor.

Over the years there have been many posts on this topic and I believe oil at 20 degrees above water is standard.

Oil 20degrees below water temp, if true, means that oil is not warm enough to boil off contaminents.

If water temp is getting to 260 degrees, I'd want to clean the radiator and install some lower temp fan turn on switches. If water get to 260, oil has to be way over that!

Jack


[Modified by jackdaroofer, 8:56 PM 10/15/2002]
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Old Oct 15, 2002 | 10:08 PM
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Default Re: 1990 l98 engine oil temp?? (jackdaroofer)

:yesnod: My oil temps. are usually about 15-20 degrees higher than my collant temps.
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Old Oct 16, 2002 | 02:53 PM
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Default Re: 1990 l98 engine oil temp?? (jackdaroofer)

thanks guys, where might i find this oil temp sensor, so i can change it??
TIA :D
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Old Oct 16, 2002 | 06:08 PM
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Default Re: 1990 l98 engine oil temp?? (guywade)

The oil temp sw is located just above the oil filter and the General has them for a little under $40.
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Old Oct 29, 2002 | 03:31 PM
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Default Re: 1990 l98 engine oil temp?? (guywade)

fixed it , i guess it was loose connection and something like that, work just like you all said , ,thanks again to all GUY :cheers: :cheers: :cool: :D
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