FMI-How many hours or miles on Mobil 1 Syn.

[Proletarian]

TBN: Is a measurement of the reserve alkalinity remaining in engine lubricants and is
indicitive of the oils ability to counteract acid formation. decrease in TBN affects the ability
of the lubricant to protect against corrosion of such engine parts as rings and cylinder
liners. a low TBN usually means a low dispersion characteristic and a depleted additive package.

 

[rswyan]

the oil started out at 14 TBN (Total base number) and dropped to 6 at 7000 miles. They recommended changing it. this has been several years ago and I dont have the test sheets or the truck any longer.

Fair enough.

TBN: Is a measurement of the reserve alkalinity remaining in engine lubricants and is
indicitive of the oils ability to counteract acid formation. decrease in TBN affects the ability
of the lubricant to protect against corrosion of such engine parts as rings and cylinder
liners. a low TBN usually means a low dispersion characteristic and a depleted additive package.

Ummm .... yeah .... ?

FWIW:









Might be worth noting the comments on TBN in the above UOA's, particularly in the first two. The vehicle in question currently has 376,000+ miles on it (original engine, no significant mechanical problems - ever ....) .... and runs like a top ....

 

[jonyyuma]

Fair enough.


Ummm .... yeah .... ?

FWIW:

TACH=CONFIG]271289[/ATTACH]

Might be worth noting the comments on TBN in the above UOA's, particularly in the first two. The vehicle in question currently has 376,000+ miles on it (original engine, no significant mechanical problems - ever ....) .... and runs like a top ....

Interesting reading and at 25 thousand miles??? What type bypass filter are you using?? I have not added one to this engine yet, as i do still have factory warranty...So as that is up,,, then i plan on adding the second filter..

 

[Proletarian]

my truck ran fine as well and I wanted to keep it that way. I simply followed the advice of the lab.

 

[jonyyuma]

my truck ran fine as well and I wanted to keep it that way. I simply followed the advice of the lab.

The last lab service was kindly high...What do you pay for oil anly...plz?

 

[Proletarian]

this was back in 2004/05 I believe and it was $45.00 if I remember correctly. I'm sure its gone up by now like everything else.

 

[jonyyuma]

I bet it is more too. We still send in samples on equipment here, But I haven't thought about sampling my Mobil 1 since i parked all my diesels except the tractor..I still like the wipe test on the white paper towel, with the dipstick..Looking at color, and particles, at about evey third tank of gas...I did find a bad oil filter once doing exactly that..Paper particles were in the oil, the dipstick looked slightly fuzzy..

 

[Proletarian]

I bet it is more too. We still send in samples on equipment here, But I haven't thought about sampling my Mobil 1 since i parked all my diesels except the tractor..I still like the wipe test on the white paper towel, with the dipstick..Looking at color, and particles, at about evey third tank of gas...I did find a bad oil filter once doing exactly that..Paper particles were in the oil, the dipstick looked slightly fuzzy..

I never tried that, Sound useful to a trained eye. I will start to pay more attention to my dipstick samples, thanks...

 

[rswyan]

Interesting reading and at 25 thousand miles???

Yup ...

I didn't drain and totally change out the oil until that sump had over 51,000 miles on it .... and it was likely still good then (I have a sample from that drain I still haven't gotten around to sending in :confused2

Blackstone's report forms make it a little confusing - it's the same oil sump from mile 135,283 to mile 160,259 on the odometer and the makeup oil listed is a total up to that time on the last two UOA's, not cumulative (IOW, 5.25 total quarts over 24,976 miles)

Consulting my maintenance log, I see that the entire sump (around 10.5 quarts) was eventually changed out at 186,657 .... so 186,657 minus 135,283 = 51,371 miles on the sump before changing ....

What type bypass filter are you using??

A Motor Guard M-30, modified by Ralph Woods of Texas .... essentially it's a TP filter (toilet paper - I mostly used Scott 1000 ) .... similar to a Frantz ....

I usually changed the filter every 3K to 5K miles (roll of TP is less than a buck) and added maybe a 1/4 to 1/2 quart of make up oil.

Right now the bypass filter is off the truck - I got tired of changing the filter so often (I'm lazy and I run a lot of miles) ....

I have a centrifuge (Spinner) filter I haven't gotten around to installing yet .... should require less servicing.

I have not added one to this engine yet, as i do still have factory warranty... So as that is up,,, then i plan on adding the second filter..

Worthwhile investment if you run a lot of miles or hours IMHO ....

 

[Corno]

I run 20K miles on each oil change on my Honda Accord with no issues at all. And also change my oil once a year on my 2005 Duramax with both using Amsoil. I am also a Amsoil dealer so if anyone has any questions about our products I can help.