I´m wondering if my engine it´s Ok or has serius problems.
The other day after traveling down the highway for about one hour at 200 Km/h (120 Mph ) everything was fine.
Then when I jumped of the highway and stoped at the first traffic light I noticed the oil pressure was in 0.5 Bar, the engine temp was 95-99 ° C.
10 minutes after that the engine cooldown just about 85-90 ° C and the oil pressure climbed to 0.8-1 Bar.
The outside temp was 40 ° C ( 104 ° F).
It´s this normal ? I´m just paranoid ???
Tnx !!!!
PS: My engine is a M110, I know it´s very rare in the US but It´s a very common car here !!! (It´s very rare to see W126 with V8 !!! )
This isn't totally out of the ordinary for an m110... What weight oil are you running and how long has it been since your last change? Are you certain your oil cooler is working properly?
This isn't totally out of the ordinary for an m110... What weight oil are you running and how long has it been since your last change? Are you certain your oil cooler is working properly?
How many miles on your car?
Jonathan
Im running mineral oil 15-40 and I´ve changed it just about 500 miles. The oil cooler is working, I´ve changed the Oil T-stat and the oil radiator has no obstructions.
The car has 160000 miles but the engine was recently done ( I has 35000 miles).
I´ve changed all the bearings and oil pump.
Well, I'd be running 20/50 for one.. two, @ that ambient temp and given the RPM's you were turning I'm not all that surprised.
You may want to give your oil cooler fins a clean, make sure it's working to it's fullest capacity.
Also, when you do get your oil that hot keep in mind that shortens it's life and you should consider these conditions to be 'extreme' thus modifying your oil change schedule accordingly.
Given that you recently rebuild the engine, I'd go w/ a 20/50 synthetic that is Not approved for 07/08 emissions systems.
I noticed the same thing the other day, but I had not been driving quite that fast. 85-100 for 4-5 miles got of the freeway and went through a fast food drive through. I noticed that the temp was about 82-85C and sitting idling the oil pressure would drop to almost 1 then back to 2. It fluctuated like this a couple or three times then back on the city street It was 3. I wondered about my oil pump, but then thought that the oil was really warm. I run 20-50 Oil, not synthetic. Thoughts?
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I´m wondering if my engine it´s Ok or has serius problems.
The other day after traveling down the highway for about one hour at 200 Km/h (120 Mph ) everything was fine.
Then when I jumped of the highway and stoped at the first traffic light I noticed the oil pressure was in 0.5 Bar, the engine temp was 95-99 ° C.
10 minutes after that the engine cooldown just about 85-90 ° C and the oil pressure climbed to 0.8-1 Bar.
The outside temp was 40 ° C ( 104 ° F).
It´s this normal ? I´m just paranoid ???
Tnx !!!!
PS: My engine is a M110, I know it´s very rare in the US but It´s a very common car here !!! (It´s very rare to see W126 with V8 !!! )
If the temperature rises, the oil pressure will drop on the gauge. It's completely normal, as far as i know. According to the user manual, as long as you have 0.5 bar or more, everything is OK.
Moreover, considering that the temperature outside was 40 degrees C, i think the performance is phenomenal!!
Che, no te pongas paranoico. Saludos desde Lima, Perú. Aquí el M110 también es muy común.
Last edited by flavio81 : 02-12-2008 at 08:41 AM.
Reason: Spanish comments
I forgot to add that the temp was about 70F. The car is the one in my avatar. Normally the car never fluctuates below 2 when idling. I got home and checked the oil, (I'm less than midway through a change period) and my oil is still topped off at the top notch or just a smidgen below. Been that way since Dec 1 when I had my timing chain replaced and all the fluids drained and replaced. Tranny is still full too. I think I got a good one.
Since I have no leaks I'm considering a switch to Mobil 1 synthetic. Any thoughts on that one?
Vehicle: 1985 500SEC, 1991 190E 2.6, bought 07/08 with 50k original miles.
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Quote:
Originally Posted by Charlies84380SE
I forgot to add that the temp was about 70F. The car is the one in my avatar. Normally the car never fluctuates below 2 when idling. I got home and checked the oil, (I'm less than midway through a change period) and my oil is still topped off at the top notch or just a smidgen below. Been that way since Dec 1 when I had my timing chain replaced and all the fluids drained and replaced. Tranny is still full too. I think I got a good one.
Since I have no leaks I'm considering a switch to Mobil 1 synthetic. Any thoughts on that one?
Well, I'd be running 20/50 for one.. two, @ that ambient temp and given the RPM's you were turning I'm not all that surprised.
You may want to give your oil cooler fins a clean, make sure it's working to it's fullest capacity.
Also, when you do get your oil that hot keep in mind that shortens it's life and you should consider these conditions to be 'extreme' thus modifying your oil change schedule accordingly.
Given that you recently rebuild the engine, I'd go w/ a 20/50 synthetic that is Not approved for 07/08 emissions systems.
Jonathan
Yes, I think I will clean the radiator fins and the next time I have to change the oil I´ll go for the 20/50 and see what happens !!!
PS: I change my oil every 5000 Km (3000 Miles)
Tnk for your time !!!
Quote:
Originally Posted by flavio81
If the temperature rises, the oil pressure will drop on the gauge. It's completely normal, as far as i know. According to the user manual, as long as you have 0.5 bar or more, everything is OK.
Moreover, considering that the temperature outside was 40 degrees C, i think the performance is phenomenal!!
Che, no te pongas paranoico. Saludos desde Lima, Perú. Aquí el M110 también es muy común.
Yes I know that 0.5 is quite normal, but I was just curious if I was the only one !!!!
My father has a 1995 E 300 Diesel and after hours and hours of punishment when you stop and let the engine idle the pressure stays arrond 2-2.5 Bar Never Less !!!!!
Ja ja no es por paranoia !!! es que siempre quise un V8 y aqui en este foro hay tantos !!! Algun dia llegara mi 560 SEC !!!
Saludos tambien desde aqui, Buenos Aires, Argentina y muchas gracias !!!
)
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