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Oil Presure at idle (hot)
My 85.5 944 n/a has 5bar oil pressure when cold and when running hot at normal rpm. at 2000rpm and lower drops to around 3bar when hot. After highway driving then at stop lights it drops to just over 1bar. As the engine cools ( driving down the street etc it comes back to just under 2bar ) I'm running Mobile synthetic oil with o/e porsche filter and the oil pressure switch is new.
I would welcome any input however drastic it's going to be... Harry.. 
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09-15-2008, 12:12 PM
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Join Date: Nov 2004
Location: ronkonkoma ny 11779
Posts: 2,024
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thats normal, if you have close to 100K stay away from to 0w and 5w oils
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83 944....bye bye 85.5 euro spec 944, 5sp (she's gone....  74 914...hasta LA Vista baby 87 924s....don't let the door hit ya 68 912.......see ya! |
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09-15-2008, 12:18 PM
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Quality
Join Date: Oct 2007
Location: Philadelphia area and Morristown NJ
Posts: 951
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1 is lowish...
'Hot' oil should post at 2 bar. However, I think the 83 manual says that the warning light may flash on/could dip into that territory on hot hot runs. Is your warning light coming on? What oil are you running is what people will ask first! 20-50 for summer 10-50 for winter if I recall correctly (I always have to look up oil weights, I always forget!) What are you running? Don't know? CHANGE IT to the right stuff then get back to us. 
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85.5 944 NA 5spd - Sold but not forgotten 89 951 Turbo S - Revival in progress...
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09-15-2008, 12:20 PM
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The oil used is Mobil 5w50 synthetic and the oil light did flash on now and again but since the new switch was installed it has not come on and the oil pressure is stabalized
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09-15-2008, 12:43 PM
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Toofah King Bad
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Fine, per owner's manual.
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» 1987 924S Turbo - Got Boost? « "DETERMINATION. Sometimes cars test us to make sure we're worthy. Fix it." - alfadoc |
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09-15-2008, 02:50 PM
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That has been the norm since the first 924 hit the road, I dont think they changed that until the S2 and 968.
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Rick 93 968 (My summer car), 05 Cayenne S (My winter car), 79 924 (Wife's summer car), 02 C230k (Wife's winter car), |
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09-15-2008, 08:46 PM
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What would Darth Vader do
Join Date: Feb 2001
Location: Orange, California
Posts: 1,324
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You may want to switch to the 20-50.
What state are you in. Hotter states would warrant 20-50.
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1983 944 (2002 to now) 3-924's (Sold) 1967-912 (Traded) NEVER put a used water pump in your car... |
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09-15-2008, 09:03 PM
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Thank's guy's... I can breath a little more now. I'm in Toronto Ont. Origionally from the UK. ( yeah we do get some hot summers here too lol. I will change change the Grade used to 15w50 as i don't think 20w50 is readily available up here. I don't run the car in the winter at all it hasn't seen one for at least 10 years.
H.. |
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09-16-2008, 07:03 AM
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On my 86 when i bought it the oil presure was droping to 2 bar at idle when was driving it hard and 4.5 bar on the throttle.I changed the oil to Castrol Edge 10w60 racing and now it holds 3 bar at idle when driving hard and 3.5 bar when driving normal and 5 on the throttle.The temperature outside doesn't seem to affect it,drove it summer and winter.Oo and it cost me 15euro/1L but its worth it.
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Catalin '86 DD |
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09-17-2008, 08:52 AM
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Shaggy
Red
Chumpy
Weiße Scheiße
