Oil pressure too high?

[ero 5.0]

So ever since switching over to 10w-30 oil last months my oil pressure is much higher. At a cold start (approx 40 degrees here) the oil pressure sits at about 90-95 psi. Then even when the engine is completely warm, it hovers right around 75-80 on the freeway. Is this too high? Or u think its just cuz of the cold weather?

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[Khyber]

sounds like a 10w30 thing? what made you switch to that?

 

[LETHAL]

Higher viscosity = more pressure at cold starts. Least in theory.

I'll echo the question, why did you go with 10w-30?

 

[rozay]

Why 10w30?

 

[madweazl]

In colder weather you should be dropping the "w" rating, not increasing.

 

[ero 5.0]

check out my previous thread where literally every single person suggested 10w-30 for my car. boss mani 8k redline hard driving. I might switch back I guess. Its just frustrating getting 1000 different answers from people. shouldnt have to be so much trial and error...

anywayz is this damaging at all or should I change it back soon?

 

[rainier446]

check out my previous thread where literally every single person suggested 10w-30 for my car. boss mani 8k redline hard driving. I might switch back I guess. Its just frustrating getting 1000 different answers from people. shouldnt have to be so much trial and error...

anywayz is this damaging at all or should I change it back soon?

You're fine. While message boards suck in regards to opinions (everyone's got one) they're useful for information after you sift through the garbage. I don't believe that this is the place for an oil discussion in regards to shearing, TBN, chemical breakup, etc. With such a higher revving motor that (according to you) is abused heavily the raise to 10w-30 is going to be more beneficial than detrimental.

If you have more in-depth questions I suggest going to the BITOG forum, that place is dedicated to oil and not biased to the platform like most folks here are. They've got real data to back up their claims for what brand, viscosity, and timelines you should follow for oil.

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[madweazl]

You're fine. While message boards suck in regards to opinions (everyone's got one) they're useful for information after you sift through the garbage. I don't believe that this is the place for an oil discussion in regards to shearing, TBN, chemical breakup, etc. With such a higher revving motor that (according to you) is abused heavily the raise to 10w-30 is going to be more beneficial than detrimental.

If you have more in-depth questions I suggest going to the BITOG forum, that place is dedicated to oil and not biased to the platform like most folks here are. They've got real data to back up their claims for what brand, viscosity, and timelines you should follow for oil.

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Except 5w30 would have been a far better choice if he wanted to move up to 30.

 

[ero 5.0]

You're fine. While message boards suck in regards to opinions (everyone's got one) they're useful for information after you sift through the garbage. I don't believe that this is the place for an oil discussion in regards to shearing, TBN, chemical breakup, etc. With such a higher revving motor that (according to you) is abused heavily the raise to 10w-30 is going to be more beneficial than detrimental.

If you have more in-depth questions I suggest going to the BITOG forum, that place is dedicated to oil and not biased to the platform like most folks here are. They've got real data to back up their claims for what brand, viscosity, and timelines you should follow for oil.

Sent from my XT1080 using Tapatalk

thank you

 

[Silver50Pony]

5 w 20 is best just get a real good synthetic like amsoil or royal purple hps . these engines were built for 5w20 and have oil squirters to make sure the 8 quarts properly lube the motor especially at idle when generally the psi is lower. The oil has to be thin enough to go through The squirters properly.The 8 quarts are protection enough as long as you use great synthetic 5w20 and change out the oil every 3k miles. Get a set of billet oil pump gears for the oil pump so the pump stays working with all the high rpm shifts. Also another thing you can do is get the Ford racing oil filter, holds another half a quart! Makes it 8.5 quarts!

 

[Wally-Bob]

I don't claim to be an expert but Ford discontinued the oil squirter's beginning with the 2013 Coyote.

I'm running 5W-50 full synthetic, the oil was changed by my dealer with the service manager's blessings at ~1000 miles after break in. I didn't like the less than 20 PSI oil pressure with the stock 5W-20 at idle during the hot summer in South Florida. (Stock Shelby is 5W-50 http://www.fordservicecontent.com/F...350-Supplement-version-1_su_EN-US_07_2015.pdf pg 48) When cold, my Coyote will reach about 85 PSI @ 2000+ RPM. I don't go "racing" until the oil temperature has come up to normal. At normal oil operating temperatures (according to the center dash gauge) I can shift thru the gears at red line and have done so many time with out issue. At operating temperatures, 60 PSI @ 2500 RPM is nominal.

I welcome all comments and observations.
That's what this forum is all about, sharing your thoughts and experiences.

 

[Silver50Pony]

I idle hot with 5w 20 full synthetic around 27 psi

 

[Kahboom]

5w30 full synthetic here, 80-85 psi when cold start in 45degree whether. Drops to 60-65psi at 2000+ rpm when warm.

 

[dgc333]

I don't claim to be an expert but Ford discontinued the oil squirter's beginning with the 2013 Coyote.

I'm running 5W-50 full synthetic, the oil was changed by my dealer with the service manager's blessings at ~1000 miles after break in. I didn't like the less than 20 PSI oil pressure with the stock 5W-20 at idle during the hot summer in South Florida. (Stock Shelby is 5W-50 http://www.fordservicecontent.com/F...350-Supplement-version-1_su_EN-US_07_2015.pdf pg 48) When cold, my Coyote will reach about 85 PSI @ 2000+ RPM. I don't go "racing" until the oil temperature has come up to normal. At normal oil operating temperatures (according to the center dash gauge) I can shift thru the gears at red line and have done so many time with out issue. At operating temperatures, 60 PSI @ 2500 RPM is nominal.

I welcome all comments and observations.
That's what this forum is all about, sharing your thoughts and experiences.

High oil pressure is not a good thing. It puts high loads on the oil pump drive and can result in premature failure.

There is a rule of thumb that has been around since the 50's that states you should have 10 psi for each 1000 rpm, it's still applicable today but manufacturer's are designing engines to run on less pressure these days.

Back early in my engineering career I ran the test lab for a company that made sensors for automotive use, we OEM'd to Ford, Chrysler and GM. The sensor that turned on the low oil pressure light for all three OEMs was set to trip a 4-6 psi. So even in the 70s they recognized that high oil pressure was not required or desired.

There is no benifit to having pressures exceeding the rule of thumb and definately can cause failures, not to mention the loss of HP and economy do to the added drag.

 

[whirledpeaz]

check out my previous thread where literally every single person suggested 10w-30 for my car. boss mani 8k redline hard driving. I might switch back I guess. Its just frustrating getting 1000 different answers from people. shouldnt have to be so much trial and error...

anywayz is this damaging at all or should I change it back soon?

Definitely 5w-30. Since you're catless I might even go with 5w-40 Rotella T6 Full Syn. Great oil and cheap too.

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