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Posted on 4/5/14 at 10:03 pm to Hammertime
You can't tell by sight or smell how much active additive is left in the oil. Only can be done by a lab. Most smell could tell you is if you have serious fuel dilution problem.
Posted on 4/5/14 at 10:13 pm to Sayre
quote:
How can you tell visually if an oil is good or not?
Just estimate. For one I got my truck new so at the time it wasn't like there was crud built up in the oil, and I worked at an auto place doing oil changes all day, I saw the intervals and what the oil looked like coming out. The aimsoil at 10K wasn't the same consistency or quite as dark as Mobil at 10K or conventional at 5K. The mobil I couldn't really tell. I just knew people go 10K on it without problems so I guess I was telling myself it had more since I was changing it after 7K.
Once I quit wokring there and didn't get oil free anymore I used synthetic a couple more oil changes and then just generally stopped being as anal about the vehicle.
Now it's a kinda beat up 7yo truck with 80K on it, but it's adequately maintained even if I'm a little heavy footed. Hopefully I can get another 7 years and 80K on it without trouble.
Posted on 4/5/14 at 10:22 pm to ellunchboxo
quote:
It's 0W20
No, it's 0w40
you may use 20, mine uses 40 as I am the one that brings it to them
I have to run the hell out of the truck with the modifications and pulling trailers and a fifth wheel
This post was edited on 4/5/14 at 10:27 pm
Posted on 4/5/14 at 11:07 pm to WHATDOINO
0w40 was one of my secrets drag racing. Turbos love the stuff (less spool) but after running many passes and many street miles on several motors, I can not recommend. Every engine i ran with it had upper end damage even on hydraulic lifters. It does fine on bottom end bearings but it seems to be too non-visous for fadt moving parts in the head.
Posted on 4/5/14 at 11:20 pm to Clames
Fuel
Coolant
Burnt oil
All smells you can get from oil. I guess you can also visually look at and see if there is water/coolant in it
Coolant
Burnt oil
All smells you can get from oil. I guess you can also visually look at and see if there is water/coolant in it
Posted on 4/6/14 at 6:04 am to Hammertime
None of those things present in quantities you could detect unless the engine had a significant problem. Labs can detect coolant and fuel in small parts per million. A lab test could tell you coolant was getting into the oil long before you would notice it as a problem which is why fleet owners use oil testing to get ahead of problems.
Posted on 4/6/14 at 7:53 am to Hammertime
quote:
How can you tell visually if an oil is good or not?
quote:
To be honest, after probably 1500mi, you can't. If you could do any self test, smelling would be better IMHO
I was being factitious when I asked that. There is no way to visually tell that your oil is bad in any normal situation.
Posted on 4/6/14 at 8:29 am to Sayre
I have a 2004 trailblazer with 250k miles. I have only run Mobil 1 in it. I did a compression check on it due to the bad Exxon gas. The cylinders without the stuck valves were at 200psi of compression.
On an engine with that many miles that pretty shocking. Essentially it's lost no compression in 10 years and 250k miles.
I'm a believer.
On an engine with that many miles that pretty shocking. Essentially it's lost no compression in 10 years and 250k miles.
I'm a believer.
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