Nissan 370Z Forum - Oil Temperature in Cooler Weather

Nissan 370Z Forum (http://www.the370z.com/)

- Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)

- - Oil Temperature in Cooler Weather (http://www.the370z.com/engine-drivetrain/27085-oil-temperature-cooler-weather.html)

Ya dreamer that is the plan, but currently no daily driver for when she's in the shop.... after I go offshore and come back ill prob drop one in... JB needs to show me his ride, it will make me want it sooner >.<

Here is what Dustin@Z1 told me when I inquired about the 160-170 degree readings I was seeing:

Quote:

No worries. This is perfectly normal. There is a slight flaw in the VQ37VHR's design that we have discovered. Like I have mentioned in the past, over cooling the engine oil is just as detrimental as over heating it. The general oil temp range you want to see on a properly installed oil temp gauge is between 190 ~ 210 ideally.

This engine oil temp is what you want to see COMING OUT from the motor. In the case of the 370z and any add-on oil cooler, you are actually getting a false reading. Since the factory temp gauge reads engine oil as it exits the Oil Filter, you are actually reading the oil temp coming directly from the oil cooler. The flow pattern for engine oil on a 370z is as follows:

Pick Up Tube --> Oil Pump --> Oil Filter IN --> Oil Filter Out --> Oil Cooler --> Engine Block (Temp and Pressure gauges are located in this galley)

The temp you are reading is actually what is going back INTO the engine (which is perfect). By the time it cycles thru the engine, you can expect to see engine temps in 200 degree range.

As for the thermostatic sandwich plate, it will bypass roughly 80% of the oil back into the engine when too cold. It will still flow ~ 20% thru the oil cooler (preventing air pockets from forming).

To get a TRUE Oil Temp reading, you would need to install an inline oil temp gauge coming out from the Thermostatic Sandwich plate before the oil cooler.

I hope that this answers some questions and relieves some stress! If you have an questions, definitly give me a shout.

Quote:

Originally Posted by spearfish25 (Post 788370)

How many times do you have to retape during a cold season?

Not sure, I replace it every now and then in order to prevent residue stuck on it

35 to 50 ish and my engine took over 30 minutes to get to 180 (doing 75-65 on the highway. I put a shield (not painters tape) over the cooler and now in about 10-15 min I'm at 180-200.

I'm running Redline 5-30

I will take off the shield probably before my first track event in April.

^pics of your cover please!

When there is better light I think the picture will turn out. But for now I'll just describe it: 2" L channel aluminum cut the length of the bracket holding the oil cooler in place. Simple aluminum sheet (1/16") cut to the size of the cooler. The plate is pop-rivited to the L-channel and then the rivets are hammered flat. Paint flat black and attach rubber pads ( hate to admit Home Depot purchase) to back of plate and L-channel to keep from vibrating. Bolt in place ---done. :tup: