should i worry about low oil and water temp? r34gtr

[Nosure]

Hi my r34 gtr always run lower oil temp since i import it 2 years ago. and now even lower with some addition mods like nismo thermostat, and big oil sump etc. 

At moment it run max 75C(normally around 60c-70c depend outside temp) oil and 70C water on street. if i push it hard for 10 mins the oil temp still around 90c, water temp below 80c.

the car has nitto oil pump, high octane 9L sump, nismo oil cooler.  arc intercooler, nismo radiator. car is running e85 made near 500awkw.

should i worry about the oil temp?  i'm start thinking i got bad sensor:(

[djvoodoo]

If you're running 10-40/50 synth oil, perfect operating temp is around 90 deg as far as i'm aware. 

I'm running a Tridon 71 deg thermo i think. Sits on 80-83 deg in normal traffic and cruising.

You can tune around the lower temp using fuel/temp corrections, but 70-75 seems a bit too cold for these engines????

 

[GTSBoy]

Piss off the stupid Nismo thermostat for an instant improvement.

[Nosure]

i'm not really worry about the water temp, but the oil temp look too low for me. the oil temp only go up to 80C+ when in really bad traffic like 10 mins drive 1km. i use 10w40 or 5w40 oil. maybe i should change to 5w30?

[Nosure]

but if i use 40 weight oil the viscosity @ 70c should similer to people running 50 weight oil @ 80c+? 

[Piggaz]

Ditch the stupid Nismo thermostat. It's as useless as tits on a bull!

Those things should be discontinued!

[Nosure]

ok, but what to do with the oil temp??

[GTSBoy]

Oil and water in contact in the HX.  Warmer water = warmer oil too.

[iruvyouskyrine]

Block your oil cooler with some cardboard in the cooler months of the year as well. Cheap and effective.

[Nosure]

21 hours ago, GTSBoy said:

Oil and water in contact in the HX.  Warmer water = warmer oil too.

yes true. but even before i put the nismo thermostat the oil temp still that low.  with the nismo thermostat only the water temp goes lower which is normal for low temp thermostat.  i did a short drive today, found the oil temp did go up to 75c in city with a lot stops. water temp is around 70c if i cruising around , but it go up to 85c when stuck in traffic.

[Nosure]

12 hours ago, iruvyouskyrine said:

Block your oil cooler with some cardboard in the cooler months of the year as well. Cheap and effective.

ok look like a good idea:)

[KiwiRS4T]

Get rid of the Nismo thermostat and replace with stock. Get a thermostat for your oil cooler and/or make a cover for the oil cooler when you are not thrashing the car. (maybe you are not pushing it hard enough!).

[Nosure]

17 hours ago, KiwiRS4T said:

Get rid of the Nismo thermostat and replace with stock. Get a thermostat for your oil cooler and/or make a cover for the oil cooler when you are not thrashing the car. (maybe you are not pushing it hard enough!).

You are right. I did not pushing it hard enough:) but Is there any long term effect from the lower temp? The car drive perfectly. Power always there.   And I change oil every 3000kms or sooner. 

[Nosure]

17 hours ago, KiwiRS4T said:

Get rid of the Nismo thermostat and replace with stock. Get a thermostat for your oil cooler and/or make a cover for the oil cooler when you are not thrashing the car. (maybe you are not pushing it hard enough!).

I think Nismo oil cooler should include the oil thermostat plate?

[GTSBoy]

Yes, running engines too cold increases wear, and fuel consumption (assuming tune is not adjusted to suit).

[Nosure]

3 hours ago, GTSBoy said:

Yes, running engines too cold increases wear, and fuel consumption (assuming tune is not adjusted to suit).

thanks for reply.  i will try use some cardboard block the oil cooler and see the different. my tune is suit for low temp no problem.

[R377]

I recently installed oil cooler and gauges in my car.  I actually didn't think too much about the oil temp being too cold.

 

My gauge starts at 50.  I warm it up, then baby it, revving to 2500 until the gauge starts to move, but it never really gets more than 60 driving.  Running it hard through the hills it might maybe go to 70 and on the racetrack will go to 70-80 max.

I am running 15-60w penrite/nulon.  Should i be concerned or do anything ? The cardboard idea was good...

 

Greddy oil cooler located drivers side

 

 

[GTSBoy]

Oil should run about 90°C.  60-70 is too cold, unless you use a thinner oil.

[R377]

3 hours ago, GTSBoy said:

Oil should run about 90°C.  60-70 is too cold, unless you use a thinner oil.

should i run a 5-40 then ?

[GTSBoy]

It's not the 10 in 10-40 that you should consider changing down.  It's the 40.  The smaller number is the "winter" viscosity, which essentially how it behaves dead cold.  At 70 ish degrees, you're not talking about that end of the oil's rating, your talking about the normal end.  So if you're running 40 now, then 30 would be the logical decrease, if you were going to try to deal with your possible low-oil-temperature-causing-high-viscosity problem by running thinner oil, that is.