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| 95fairmont |
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G'day guys! I was wondering if anyone have an idea what's wrong with my I6. Today was a very hot day here in Western Sydney. As I was driving my 95 EF (mid-day), I noticed my oil pressure gauge was giving a very low reading...and when idling, it would go to the orange region and at one point gave off a beeping sound indicating very low oil pressure. This has been the second time it has occured, I ignored the previous one because it never happened again (on that day). I remember it was a very hot day (40degs) as well when it first happened. At these instances, my water temp reading is fairly normal...pointing at the letter 'M'. I am using 10-40W viscosity engine oil. This only happens when ambient temp approaches 40 degs.
Any ideas? Is it the engine oil? The heat? My oil pressure sender failing (in the heat)? Please help! Thanks in advance. 
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| Interceptor |
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how many k's on your engine? it could just be that the oil is thinning out enough to drop the oil pressure in a high km engine
_________________ Banned |
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| Disco Frank |
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also with heat teh oild can thin out more and the oil pump can find it hard to keep the pressure up witha thinner than normal oil
_________________ RIP SCOTT |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
it's normal. all that is happening is your oil is getting hotter and thinner on those days. don't worry about it.
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| Happy |
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ahh nice, I've often wondered that and now I have the answer! cheers!
_________________ Owning 1 of 67612 EF GLi Sedans made
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| 95fairmont |
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Thanks heaps for the replies. So the issue at hand is thinning oil due to extreme heat. Does that mean I'm using the wrong engine oil viscousity? I'm currently using 10-40W viscousity engine oil and my engine k's is 150,000. Which one do you guys recommend? (10-40W, 5-40W,15-40W,15-50W...)?
Thanks again.
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| madmax |
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I am using 20w-50 with 180,000k's.
Its not normal for the pressure to drop that low even on hot days, mine only drops to about 4-5 mark on the gauge on 30+ days. If its dropping that low your engine is likely to be recieving very little oil!
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| Waggin |
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how old is the oil ?
_________________ WAG363: AUII LTD Supercharged 363 Dart Stroker [Supercharged 363 LTD Build] |
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| Andrew J |
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I think mine sits at about 2 bar, assuming thats what the gauge reads in. If mine ever dropped to the light, then id be getting worried. Regardless of k's that its done
_________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?
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| Waggin |
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Mine sits 2nd from the top from cold start at idle, at 5500rpm, and even on the hottest days.
Love synthetic oil and the high volume oil pump 
_________________ WAG363: AUII LTD Supercharged 363 Dart Stroker [Supercharged 363 LTD Build] |
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| Andrew J |
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So whos bragging now?
_________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?
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| Lukieman |
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I don't think its a problem mate.
I change my oil quite frequently (20-50) and after it warms up the pressure on my guage drops also when the car is idling, but when it starts going again its in its usual spot. The manual which came with the EA also states that the oil may read low when the engine is idling after it has heated up, nothing to worry about.
_________________ "...we can rebuild him, we have the technology... we just dont want to spend a lot of money." |
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| 95fairmont |
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How old is the oil? I religiously have an oil and filter change every 4months or 5000kms whichever come first.
Yes, I've seen my oil pressure gauge go up and down before depending on temperature. But this time it just got me very worried 'coze the gauge lighted up and emmitted a beeping warning. This is my first summer with my EF 95 fairmont. I've driven the car 1000kms and back before on a winter but no problems. Now I just went to Bondi beach ( 1hr drive) on a 40deg day with fairly bit of traffic and I get the gauge warning everytime do idling on a stop light. I had to rev it up a little to stay above warning level. From what I have read so far, I need a higher viscousity than the 10-40W I have been using. 15-50W would do for my 150000km engine? Does every one agree? Thanks again. |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
95fairmont wrote: How old is the oil? I religiously have an oil and filter change every 4months or 5000kms whichever come first.
Yes, I've seen my oil pressure gauge go up and down before depending on temperature. But this time it just got me very worried 'coze the gauge lighted up and emmitted a beeping warning. This is my first summer with my EF 95 fairmont. I've driven the car 1000kms and back before on a winter but no problems. Now I just went to Bondi beach ( 1hr drive) on a 40deg day with fairly bit of traffic and I get the gauge warning everytime do idling on a stop light. I had to rev it up a little to stay above warning level. From what I have read so far, I need a higher viscousity than the 10-40W I have been using. 15-50W would do for my 150000km engine? Does every one agree? Thanks again. if the light came on i'd use a thicker oil like HPR 10 10w50 mine used to do that in summer when using 15w40 doesn't do it with HPR10 |
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| peter.dalgity |
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I have the same problem but we have checked the oil pressure and it seems to be OK. Have noticed the Volts very low at the same time so am looking into that as well. Have spent many hundred of $ at our local for garage with not luck.
Volts are always good when car is cold but drop off as the car gets hot. The days have to be in the 28-30 or I am towing the boat at the time. |
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