Oil Overfill
12-20-2011, 07:13 AM
#21
Moderator
Just make it tight when replacing. for OEM PCX filters, a wrench is a must.
12-20-2011, 08:00 AM
#22
I don't trust the engineers factor of safety. Its not very hard to loosen the oil drain bolt (not remove) and let a little bit leak out. I'd definitely do that instead of "wait it out" especially if they did actually put in 6 qts and didnt do a proper drain. If I'm a bit lazy on my oil draining (not waiting long enough, not dropping the front end) 5qts puts me really close to the H. You need to remember that as the oil heats up, it'll also expand! I always keep my car (at max) one X below H and at the lowest, one X below the middle.. (measured cold)
12-20-2011, 08:21 AM
#23
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12-20-2011, 08:24 AM
#24
Originally Posted by ikeyballz' timestamp='1324299775' post='21247539
I don't trust the engineers factor of safety. Its not very hard to loosen the oil drain bolt (not remove) and let a little bit leak out. I'd definitely do that instead of "wait it out" especially if they did actually put in 6 qts and didnt do a proper drain. If I'm a bit lazy on my oil draining (not waiting long enough, not dropping the front end) 5qts puts me really close to the H. You need to remember that as the oil heats up, it'll also expand! I always keep my car (at max) one X below H and at the lowest, one X below the middle.. (measured cold)
12-20-2011, 06:51 PM
#25
Originally Posted by davidc1' timestamp='1324400407' post='21251087
While I'm not a mechanic, I do know a decent amount of physics, and my impression is the oil, like water, does not expand when heated.
Note the oil level on the dipstick first thing in the morning, cold engine. Go warm it up, go for a hard drive, come back, hot engine. Oil level should "rise."
At least that's what my car does.
12-20-2011, 11:23 PM
#26
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Originally Posted by ikeyballz' timestamp='1324299775' post='21247539
I don't trust the engineers factor of safety. Its not very hard to loosen the oil drain bolt (not remove) and let a little bit leak out. I'd definitely do that instead of "wait it out" especially if they did actually put in 6 qts and didnt do a proper drain. If I'm a bit lazy on my oil draining (not waiting long enough, not dropping the front end) 5qts puts me really close to the H. You need to remember that as the oil heats up, it'll also expand! I always keep my car (at max) one X below H and at the lowest, one X below the middle.. (measured cold)
Oil and water DOES indeed expand; what it doesn't do is compress under pressure.
12-21-2011, 01:36 PM
#27
Originally Posted by davidc1' timestamp='1324400407' post='21251087
[quote name='ikeyballz' timestamp='1324299775' post='21247539']
I don't trust the engineers factor of safety. Its not very hard to loosen the oil drain bolt (not remove) and let a little bit leak out. I'd definitely do that instead of "wait it out" especially if they did actually put in 6 qts and didnt do a proper drain. If I'm a bit lazy on my oil draining (not waiting long enough, not dropping the front end) 5qts puts me really close to the H. You need to remember that as the oil heats up, it'll also expand! I always keep my car (at max) one X below H and at the lowest, one X below the middle.. (measured cold)
I don't trust the engineers factor of safety. Its not very hard to loosen the oil drain bolt (not remove) and let a little bit leak out. I'd definitely do that instead of "wait it out" especially if they did actually put in 6 qts and didnt do a proper drain. If I'm a bit lazy on my oil draining (not waiting long enough, not dropping the front end) 5qts puts me really close to the H. You need to remember that as the oil heats up, it'll also expand! I always keep my car (at max) one X below H and at the lowest, one X below the middle.. (measured cold)
Oil and water DOES indeed expand; what it doesn't do is compress under pressure.
[/quote]
Winner winner chicken dinner
12-22-2011, 01:20 AM
#28
Originally Posted by davidc1' timestamp='1324400407' post='21251087
[quote name='ikeyballz' timestamp='1324299775' post='21247539']
I don't trust the engineers factor of safety. Its not very hard to loosen the oil drain bolt (not remove) and let a little bit leak out. I'd definitely do that instead of "wait it out" especially if they did actually put in 6 qts and didnt do a proper drain. If I'm a bit lazy on my oil draining (not waiting long enough, not dropping the front end) 5qts puts me really close to the H. You need to remember that as the oil heats up, it'll also expand! I always keep my car (at max) one X below H and at the lowest, one X below the middle.. (measured cold)
I don't trust the engineers factor of safety. Its not very hard to loosen the oil drain bolt (not remove) and let a little bit leak out. I'd definitely do that instead of "wait it out" especially if they did actually put in 6 qts and didnt do a proper drain. If I'm a bit lazy on my oil draining (not waiting long enough, not dropping the front end) 5qts puts me really close to the H. You need to remember that as the oil heats up, it'll also expand! I always keep my car (at max) one X below H and at the lowest, one X below the middle.. (measured cold)
Oil and water DOES indeed expand; what it doesn't do is compress under pressure.
[/quote]
12-22-2011, 01:23 AM
#29
OK...while I wasn't' sure about oil, I know for sure, that water does NOT expand when heated. Water has three distinct phases. Solid, liquid and vapor. Ice (solid water) does expand by 9% vs it's liquid phase. In fact, it is the only substance which expands in it's solid vs liquid phases. Steam is waters vapor phase.
12-22-2011, 03:52 AM
#30
Registered User
Water does expand and contract (density). A good example of this is your coolant reservoir. Check the level when it's hot, and then check it when it's cold. The level will be much higher when it's hot (expanding). ATF level checks are the same. The cold markings are lower on the dipstick than the hot markings to compensate for heat expansion.