oil pressure problem?

**clg82** · 04-29-2007, 06:22 PM

Got a quick question i currently live in southern california and just moved here from illinois.........even on the hottest days i never had problems with my oil pressure in illinois.......now that i live in so-cal when it is extremly hot out.....my oil pressure seems to "bob" up and down below the middle line....it only does it after either i have been "racing" it or if it drives for a while and get's hot!!! Any ideas on why it's doing it?.......i checked the oil and it is at the right level!!!

**bigboykilroy** · 04-30-2007, 07:31 AM

what are u running? 5w-30 10w-30? What is the outside temp when it does this? what does th car temp says its at? Is one or both cooling fans on?

**clg82** · 04-30-2007, 07:54 AM

Originally Posted by bigboykilroy

what are u running? 5w-30 10w-30? What is the outside temp when it does this? what does th car temp says its at? Is one or both cooling fans on?

I currently am running 5w30 and the outside temp is roughly between 80-100 degrees, the car temperature is reading normal!!.........and from what i can hear neither of the cooling fans are running........

**boodster** · 04-30-2007, 01:37 PM

What brand oil are you using??

**boodster** · 04-30-2007, 01:49 PM

5W-30 might be too light weight for the amount of heat in Cali. You might want to look into getting a SAE30 oil, since this meets the high temp viscosity standards.

**clg82** · 04-30-2007, 04:10 PM

Originally Posted by boodster

5W-30 might be too light weight for the amount of heat in Cali. You might want to look into getting a SAE30 oil, since this meets the high temp viscosity standards.

sae30 oil???does this mean a 10w30 .........and i use penzoil

**joejenkinsglass** · 04-30-2007, 06:55 PM

Originally Posted by clg82

sae30 oil???does this mean a 10w30 .........and i use penzoil

try 10w40 that should do it for you I personally would not go straight 30w
good luck

**clg82** · 04-30-2007, 08:24 PM

10w40.....in penzoil........i won't have to flush out my system or anything like that is if i was switiching to synthetic do i?

**bigboykilroy** · 05-01-2007, 03:49 AM

change the oil as you would normally, DO NOT USE FRAM OIL FILTERS THEY SUCK. Use a NAPA or NAPA gold filter. Then put your oil in as you normally would. ENJOY !!

**joejenkinsglass** · 05-01-2007, 12:30 PM

Originally Posted by clg82

10w40.....in penzoil........i won't have to flush out my system or anything like that is if i was switiching to synthetic do i?

I personally dont use penzoil but whatever brand or even synthetic just change oil normally to switch

**my1973form** · 05-01-2007, 03:58 PM

I hear you on the temp I live in Phoenix, I run 10W30 Mobil 1, switching to Royal purple (10W-30) next oil change. I do not have any issue with oil pressure when it hot, personally I would never use 10w-40 it's to thick for our motors as I understand it. Your issue sound like a electrical issue (poor connection) with the sender unit. Good luck...

**clg82** · 05-01-2007, 06:25 PM

Originally Posted by my1973form

I hear you on the temp I live in Phoenix, I run 10W30 Mobil 1, switching to Royal purple (10W-30) next oil change. I do not have any issue with oil pressure when it hot, personally I would never use 10w-40 it's to thick for our motors as I understand it. Your issue sound like a electrical issue (poor connection) with the sender unit. Good luck...

so you don't think if i change to maybe 10w-30 mobil 1 that it wont help my oil pressure isue?

**my1973form** · 05-02-2007, 06:08 AM

Originally Posted by clg82

so you don't think if i change to maybe 10w-30 mobil 1 that it wont help my oil pressure isue?

Correct, your sender unit is possible defective or you have an electrical issue with it, I would change the oil to 10W-30 and remove the sender unit (check sender unit's hole is not bolcked with debris) and you could try a after market oil pressure gauge to verify you pressure and that it's not fluctuating as you indicated with the stock unit.

**clg82** · 05-02-2007, 08:46 AM

Originally Posted by my1973form

Correct, your sender unit is possible defective or you have an electrical issue with it, I would change the oil to 10W-30 and remove the sender unit (check sender unit's hole is not bolcked with debris) and you could try a after market oil pressure gauge to verify you pressure and that it's not fluctuating as you indicated with the stock unit.

Where is the sender unit located?

**my1973form** · 05-02-2007, 12:35 PM

Originally Posted by clg82

Where is the sender unit located?

Check here: http://forums.corvetteforum.com/show....php?t=1588172
http://i74.photobucket.com/albums/i2...uglocation.jpg

**joejenkinsglass** · 05-02-2007, 06:05 PM

Originally Posted by clg82

Where is the sender unit located?

its behind the intake on top of block slightly to the drivers side yo will need a special socket for it and it really sucks to get out gonna have to lay on the engine and squeeze your arms back under the cowl like I said it really sucks good luck