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So I just did a 243 heads and ls2 timing chain swap back in March. I had the shop change the oil with castrol edge full synthetic 10-w30 at the same time and now my oil pressure seems really low. After 1000 miles it barely gets over 20 psi when the car is warmed up at any rpm. I was driving and everything was fine until the last 10 miles of my trip I heard lifter tick. I pulled off at my exit and it immediately went away. I dropped the car off at my work and checked the oil and it was foamy. I included a photo of it after the drive. I thought it was the crank slapping against the oil and the oil was somehow getting in the windage tray. I tried to drain a little bit and started it up and the oil Oil pressure will stay like this at any rpm. While at operating temp. After a long drive After sitting for 10 hours
pressure was amazing. After 5 min it wouldn’t go past 30 psi and when I checked the oil on the dip stick it was foamy again. I don’t know whether it’s the oil being too high or not. It doesn’t smell like fuel and doesn’t look milky at all. I have the picture of the dipstick after sitting for 10 hour and after a long drive, with a video of the car “cold” showing the oil pressure.
You shouldn't check the oil on the dipstick with the engine running only after its sat for awhile. Your oil pressure is too low in my opinion to be driving the car and I would start with the cheapest part being the oil pressure sensor first. I'd be more worried about a leak, incorrect or worn parts or excessive clearance on the internals of the engine.
If you have a way to get it checked with a mechanical gauge I'd do that first.
I was gonna try to use a mechanical gauge at my work soon, I haven't noticed the oil pressure being too low until yesterday. I checked the oil while it was running on to see the foaming building up and also 3-5 min after it ran and still saw foam. i dont knoow if itll be the sensor because the gauge works perfectly when the car first starts. https://www.youtube.com/watch?v=yb3N...ature=youtu.be
Change the oil YOURSELF and see what happens.
wondering if they accidentally topped off your coolant in the wrong hole lol
the oil would be milky if that were the case, I smelled the oil and drained a little bit out to see if it was light. The fluid was a darker oil color and smelled like used oil without fuel/coolant. I will be changing it soon once I get some time to do it.
Pressure comes up on the throttle so that's good but never a good idea to get onto a cold engine so wait for it to heat up first. Once things are heated up though it might as well be water running through it with 5w30 but it still shouldn't have that low of an oil pressure. Use a quality oil and filter when you go back in and hopefully your good to go!
Pressure comes up on the throttle so that's good but never a good idea to get onto a cold engine so wait for it to heat up first. Once things are heated up though it might as well be water running through it with 5w30 but it still shouldn't have that low of an oil pressure. Use a quality oil and filter when you go back in and hopefully your good to go!
ill probably go with Mobile 1 with a wix or fram oil filter.
Description sounds to me like oil pump O-ring leak; pump sucking air.
Nor gonna fix it with a different brand of oil and filter. We could all "enjoy" (I use the word VERY loosely) yet another thread to add to the MILLIONS already existing on car forums about "what oil is best" "what oil should I use" "what oil do you use" "[fill in the blank brand] oil sucks" and on and on and on and on. Waste of bandwidth. While I suppose it's possible that there's ONE "best" oil out there, the difference between that and any decent quality name-brand product in any application any of us here are concerned with, is less than negligilble.
Get the WIx XP filter, much better quality than the Fram. I would be curious to see your oil. Cut the filter too. If you've really been driving around with <20psi of oil pressure it will be immediately obvious.
Get the WIx XP filter, much better quality than the Fram. I would be curious to see your oil. Cut the filter too. If you've really been driving around with <20psi of oil pressure it will be immediately obvious.
Regular wix filter. The XP doesn't belong on a perfomance car, despite being the "better" line of filter - the filter material is too restrictive as its intended for long life applications, it actually lowers oil flow vs the regular wix.
Regular wix filter. The XP doesn't belong on a perfomance car, despite being the "better" line of filter - the filter material is too restrictive as its intended for long life applications, it actually lowers oil flow vs the regular wix.
I’m not trying to hijack this guy’s thread, but my understanding after looking at efficiency results on BITOG is the XP actually has a less restrictive, higher flowing design (albeit less efficient filtration). It’s a synthetic filter vs paper cellulose, and is highly recommended on the sticky here for many years. Someone might want a filter that is more efficient (like the regular Wix) but I’m not familiar with the XP being more restrictive. I’ve never noticed a difference in oil pressure, but I’d love to learn more about that if there’s data that backs it up.
That oil isn't foamy, It's thin from heat and possibly fuel mixed in. Change the oil and see what happens.
Water and oil don't mix and it wouldn't look anything like that.
when I tried to drain a little bit out, it came thick. The oil doesn’t smell like fuel. I’m gonna drop the pan next week (because I don’t drive the car) and replace the pick up tube o-ring (which may be loose or not seated when I swapped the chain). Hopefully once I swap out the o-ring I’ll clean the pick up tube and change my seeping oil pan gasket.
Thick oil? Wouldn't be surprised to find out the pan was caked in sludge and oil was having a hard time making it to the pick up tube much less through the tube..
IDK.. You had the heads and chain replaced which means the oil pump was removed so probably nothing to do with sludge and everything to do with the installation of the pump..
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Foamy Oil 1998 LS1 
