RX - 4th Gen (2016-2022) Discussion topics related to the 2016 and up RX350 and RX450h models

Oil Temperature?

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Old 03-18-19, 12:05 PM
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ericsan13
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Default Oil Temperature?

Am I dense or is there no way to check the oil temperature on the RX? I checked the secret menu but there is no oil temp anywhere.
Old 03-18-19, 12:19 PM
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Machine13
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Do you mean coolant temperature gauge? I don't think cars normally have both coolant and oil temperature gauges as it would be somewhat redundant. I don't think my RX has an oil temperature gauge anywhere in the gauge cluster.
Old 03-18-19, 12:35 PM
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mikemu30
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Originally Posted by Machine13
Do you mean coolant temperature gauge? I don't think cars normally have both coolant and oil temperature gauges as it would be somewhat redundant. I don't think my RX has an oil temperature gauge anywhere in the gauge cluster.
I've had oil PRESSURE gauges on some older cars but not sure I've seen oil temp.
Old 03-18-19, 01:37 PM
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ericsan13
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I'm talking about oil temperature. Here is a picture of what it looks like on my Macan.




http://www.porscheownersmanuals.com/..._pg126_img.jpg

A - Boost pressure display (depending on model)
B - Coolant temperature gauge
C - Engine oil temperature display
D - Engine oil pressure gauge
Old 03-18-19, 02:21 PM
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ravenuer
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I don't know of any way to check oil temperature on a Lexus. While it would be a novelty to have, I don't think it's a necessity. Coolant temp would accomplish pretty much the same thing.
Old 03-18-19, 02:31 PM
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ericsan13
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Originally Posted by ravenuer
I don't know of any way to check oil temperature on a Lexus. While it would be a novelty to have, I don't think it's a necessity. Coolant temp would accomplish pretty much the same thing.
Then is there a way to check coolant temp?
Old 03-18-19, 04:35 PM
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mikemu30
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Originally Posted by ericsan13
Then is there a way to check coolant temp?
scantool I suppose but all we have is the dummy gauge on the dash.
Old 03-18-19, 05:01 PM
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sderman
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Originally Posted by ravenuer
I don't know of any way to check oil temperature on a Lexus. While it would be a novelty to have, I don't think it's a necessity. Coolant temp would accomplish pretty much the same thing.
I don't agree. I had an oil temperature (and oil pressure gauge) on my '99 Vette. What it showed was that, as in most cars, the water temperature reached normal in 5-10 minutes of driving, but it took much longer (I'm guessing 15-20 minutes or more) for the oil to get to it's stable operating temperature. This made it very clear how it takes quite a bit of driving to boil off the water formed from combustion that condenses in the cold oil. In other words, short drives are not the best for engines.
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Old 03-18-19, 05:45 PM
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ravenuer
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Originally Posted by ericsan13
Then is there a way to check coolant temp?
That temp gauge on the dash. There's no numbers but it's a good indication of what's normal. Then you'll be able to determine when something's wrong.
Old 03-19-19, 04:31 PM
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mikemu30
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Originally Posted by ericsan13
I'm talking about oil temperature. Here is a picture of what it looks like on my Macan.




http://www.porscheownersmanuals.com/..._pg126_img.jpg

A - Boost pressure display (depending on model)
B - Coolant temperature gauge
C - Engine oil temperature display
D - Engine oil pressure gauge
TMI for the average driver. Nice data though for the enthusiast.
Old 03-20-19, 03:49 AM
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PWMDMD
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Originally Posted by sderman
I don't agree. I had an oil temperature (and oil pressure gauge) on my '99 Vette. What it showed was that, as in most cars, the water temperature reached normal in 5-10 minutes of driving, but it took much longer (I'm guessing 15-20 minutes or more) for the oil to get to it's stable operating temperature. This made it very clear how it takes quite a bit of driving to boil off the water formed from combustion that condenses in the cold oil. In other words, short drives are not the best for engines.
Short trips may not be good for engines and oil temperature may lag coolant temp but that still doesn’t make an oil temp gauge necessary - it would be a novelty in the RX. I doubt there are many people doing track days in their RX.
Old 03-20-19, 06:08 AM
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Originally Posted by PWMDMD


Short trips may not be good for engines and oil temperature may lag coolant temp but that still doesn’t make an oil temp gauge necessary - it would be a novelty in the RX. I doubt there are many people doing track days in their RX.
Agree. I don't even see a need for a tach in an RX! (for me anyway)
Old 03-20-19, 12:53 PM
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mikemu30
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Originally Posted by ravenuer
Agree. I don't even see a need for a tach in an RX! (for me anyway)
That's right - years ago mostly cars with tachs were manuals - then they started putting them in every car.
Old 03-20-19, 05:02 PM
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I like the tach and I use it all the time. It's in the HUD and since I downshift a lot I keep my eye on it. I have a motorcycle without a tach and I don't need it because I can hear the rpms, not so much in the RX.
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