January 9, 200422 yr my oil pressuge runs below 25 when its warm and at idle, and at 75 when its cold and warming up(between 2000 amd 3000 rpms). is this normarl?
January 9, 200422 yr Yep - that's about normal for a used EA81. Sounds like it's got over 100k - to keep the OP higher - use a good brand of 20w/50. I like castrol - it seems to flow nice at low temps.... I have seen new EA81's (rebuilt from CCR) where the OP is at 50 at idle, and pegged while driving! And that's with 10w/30. After they break in, the bottom end gets sloppy (although for some reason, you hardly ever will hear any noises frorm this...), and lets the oil squirt out without reaching the top end - thus the lower OP reading... GD
January 9, 200422 yr I suppose it depends on your winter - but yeah - I'm using it right now down to 15 degrees here - no problem - I'm sure it could go lower. The Subaru starters are very effective if you give em a good battery. GD
January 9, 200422 yr Author hey GD, do you have an aftermarket gauge on yours? if so whats your pressure when to just start it up in the morning? and if anybody else is using 20W/50 with a AM gauge with cold temps what your pressuge? and what's too high for these engines?
January 9, 200422 yr I have an Autometer OP gauge and it reads low (like 25 or 30psi) at idle and about 60psi at high rpm. Hope that helps!
January 9, 200422 yr Author mine runs below 25 at idle, and around 75 at high rpms. above 75 before it warms up if I get on it (which I don't do a lot) do ya'll think thats to high at rpms and to low at idle or just right?
January 9, 200422 yr my stock gauge, which belive. idle 45psi crusing, 60-65psi w/ 20w50 pensoil, 131,xxx miles also, and its blistering cold. runs like a beast.
January 9, 200422 yr I have a 90 wagon with 150,000 on it. Have had it for 3 years. Since I bought it the stock gauge just barely reads above 0 with fresh 20W50 when it's up to temperature. When it's up to temperature at 3500 RPM it barely reads 40. Engine is still running fine (although I suspect there is more pressure than the stock gauge is reading). I wouldn't worry about it.
January 9, 200422 yr forgot to mention my junkyard hatch has 199k (soon to be 200k will get a pic) as far as i know she's all original, i put 10w40 in it when i changed the oil.. its got a lower end knock when ya first start it after sitting all night.. but that stops in less than 5 seconds and she purrs like a kitten.. oil was black in 15 min again after changing it.. so that leads me to believe it was hardly ever changed before i got it.. gotta change it again soon.. oil pressure while cold is about 75psi. even at idle... as she warms up it'll drop to below 25 at idle and drivin down the road at 2500 rpm's its right at 50psi.. according to my FSM thats within spec for oil pressure on the EA81 engines.. i'm not worried about the initial startup knock, cause my 78' ford does the same thing and its got a high performance everything 429 big block.. that has about 20k on the motor.. and (Junky) runs too good to worry about it..
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