thanks for taken your time to read this. so here's my problem. i have an oil pressure gauge in my car, i attached a picture. its normally sits at 40 but for some reason when i turned on the car the gauge read at 30, so i thought maybe the oil was low but when i checked the oil it was right at full. this is not the first time this happens, last time the gauge read at 50, so im confused now. why is the gauge giveing these readings??

another issue was when i opened the top to were i put the oil there was white stuff...as you can see in the pictures. what is that???


thanks

 

Oil pressure gauge electric or mechanical? Electric ones aren't super accurate....
As for the white stuff, it's the famous lung mustard. Either you don't drive the car enough, the oil system isn't vented as well as it should, or you've got coolant getting into the oil.
Oil with coolant getting into it is not good. Can also explain the random OP readings......

 

you know now that you mention that the coolant maybe getting in the oil, i have noticed that the car has been getting a little hotter then normal (on the temp gauge it normally is straight up but ive noticed that its a little to the right now, but only sometimes

 

that in the filler neck is from lack of ventilation. mechanical is the only way to go when it comes to oil pressure gauges.

 

First off it looks like you make short trips!
The build up in the oil fill tube if from your engine not reaching running temp for a long enough period of time to get all the moisture out of the engine.

Make sure you get that engine good and hot befor you go take off.

Part 2 the engine temp issue, with a moisture built up in the engine as it boils off the steam can cause the engine to heat up more then normal.

To fix as best as possible
1. get the engine hot
2. do a oil change when its still hot

This will drain the oil and water from the engine. You should always change the oil when the engine is hot to prevent the water build up thats in your tube!

 

before you do that, modify your ROPR da wacky way. Search under my SN, ROPR. there is an easy step by step

 

thankss

how hot should the engine be before i change the oil?

 

Normal operating temps to change oil. If you do take frequent short trips, you may be getting fuel in the oil system that never has a chance to burn/evaporate off. Same goes for the lung mustard build up but venting it into the intake will solve that. Fuel in the oil thins the oil which can result in lower oil pressure readings. Smell the dip stick, if there's a strong fuel smell, change the oil. Fuel in the oil can also indicate a carb problem.

 

boy this car needs work

i wish i knew all this **** already

 

Also bears mentioning; never expect your oil PRESSURE gauge to tell you anything useful about oil LEVEL.

Oil pressure won't be affected by the level of oil until you're damn-near completely out of oil & starting to suck air through the pickup. With a rotary engine, being that low on oil can leave you only minutes from a death sentence from your motor.

Rotary design uses the oil as primary cooling for the rotor & its bearings since there's no practical way to extend the water jacket into the rotating assembly. If you start sucking air (cavitating) with the oil system, the rotors can overheat in a hurry. Not a good thing. Plus that overheat condition won't immediately show up in waterjacket temps.

Because our cars are so dependent on oil for cooling as well as lubrication (& because they consume oil regularly by design), they were some of the earliest cars to be equipped with "low oil" warning lights. By the time the light comes on, you've got only minutes to shut it down.

Check your oil via dipstick every time you buy gas. It's the only way to know for sure your oil level is good.