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glenndunn
 Post subject: Oil pressure ?
PostPosted: Mon Nov 23, 2015 1:24 pm 
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I was wondering if someone might know what my oil pressure should be, when its cold its about 75 - 80 when it get hot it can drop to around 40 is this normal or should it be the same pressure whether its hot or cold
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gtogreen1969
 Post subject: Re: Oil pressure ?
PostPosted: Mon Nov 23, 2015 1:38 pm 
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Thats normal.
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RNY997
 Post subject: Re: Oil pressure ?
PostPosted: Mon Nov 23, 2015 2:30 pm 
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40psi is the lowest you want it hot though.

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1071 S
 Post subject: Re: Oil pressure ?
PostPosted: Mon Nov 23, 2015 6:16 pm 
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At what revs??? 40 is stacks + at idle.... By the time you get to 3000 revs I would suggest you need something on the upside of 60...

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glenndunn
 Post subject: Re: Oil pressure ?
PostPosted: Mon Nov 23, 2015 7:03 pm 
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40 is about 2000 revs, 3000 about 55 - 60
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glenndunn
 Post subject: Re: Oil pressure ?
PostPosted: Mon Nov 23, 2015 7:05 pm 
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I just wasn't sure if it should be the same when its hot or cold
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BKozan
 Post subject: Re: Oil pressure ?
PostPosted: Tue Dec 01, 2015 8:37 am 
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glenndunn wrote:
I just wasn't sure if it should be the same when its hot or cold


It'll definitely have a variance. This can change with the type/brand of oil you use as well.

When I run Castrol I sit around 70psi cold idle, and 50psi warm idle. When I use Penrite Classic Mini, I'll start around 85psi cold idle, and even after it warms up it'll still be 65psi idle. After driving for 10-15 minutes, the Penrite will go all the way down to around 40psi warm idle.

I'm not a fan of the Penrite. I don't think this much variance and inconsistency is good for the Mini.

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drmini in aust
 Post subject: Re: Oil pressure ?
PostPosted: Tue Dec 01, 2015 9:45 am 
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When it gets down to 40psi hot @ 3000 rpm up, IMO it's rebuild time.
In the meantime, charge on regardless. :)

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glenndunn
 Post subject: Re: Oil pressure ?
PostPosted: Tue Dec 01, 2015 12:07 pm 
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I'm using Penrite HPR 30 20W - 60 what should be the best to use
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michaelb
 Post subject: Re: Oil pressure ?
PostPosted: Tue Dec 01, 2015 4:37 pm 
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I'm using Penrite now and pressure is better than Valvoline Classic.
75 when cold and idles around 40psi, engine has only done a few thousand kays.

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drmini in aust
 Post subject: Re: Oil pressure ?
PostPosted: Wed Dec 16, 2015 11:27 am 
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michaelb wrote:
I'm using Penrite now and pressure is better than Valvoline Classic.
75 when cold and idles around 40psi, engine has only done a few thousand kays.

I changed my Valvoline Classic to Gulf Western 20W/50 and took it for a good run yesterday.
Oil pressure cold went from 90 to 100psi, when good and hot went from 70 to 75 @ 3000rpm up.
Idles hot at about 35, motor has been in 8 years and done around 15,000 miles. Redline was 8000, now I use a 7500 rev limiter.

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