delvac is great

[Garrabo]

I've learned here, I think the topic "Delvac is great" really got the
opinions flowing like I wanted. Let me ask you this. I run Delvac 1300 super in my f-350 at ten thousand mile intervals. should I stop doing this? Should I get an oil test, Or use a different oil. or just change it more often?
Thanks to all /forums/images/graemlins/wink.gif

 

[Theowegian]

Ok, let’s summarize-

As many of you already intuitively know, there are three primary attributes to understanding a diesel engine oil.
1- oil quality
2- contamination
3- wear debris

All three are somewhat interrelated. But permit me to explain a bit.

Delvac 1300 is a good quality lubricant,
Delvac 1 (synthetic) is (probably) a great quality lubricant.

Both oils will adequately protect internal engine parts - providing careful attention is paid to their limitations.

We can pay attention to BOTH lubricant’s limitations by :

1-Oil analysis which can tell us when the lube is nearing the end of its useful life. For example, oil should be changed when the oxidation values (total base number values), and other additives, such as Barium, Phosphorus, Calcium have depleted or changed the point that an oil change is warranted. Long discussion, and I wont get into it. (Best time to change oil)

2- Oil analysis can tell us if excessive wear is occuring in an engine thru identifying debris particles. For example, metallic particles such as chromium, nickel, tin do NOT belong in a diesel lube oil (this is machine distress, specifically, abnormal bearing wear)

3-Oil analysis can tell us if contamination is occuring. For example, water intrusion or fuel dilution (this is machine distress, specifically jacket cooling water is leaking or fuel injectors are leaking)

Therefore, Delvac 1300 is a good economical choice that meets most current diesel engine specifications. Oil drain intervals should be per the mfg of the engine’s recommendations.

Delvac 1 is an excellent choice under widely varying temperature conditions (I live in kansas where the temps are really cold in the winter and really hot the summer-so I use synthetics). Oil drain intervals should still be per the mfg recommendations; however, the drain interval COULD be extended provided no contamination is occuring, such as water or fuel dilution. Oil analysis can help determine these if this is happening. You may have to change the oil filter anyways.
Also, there is some good evidence that synthetic oils exhibit superior lubricating properties, which alone warrant their use.

Neither Delvac 1300 or Delvac 1 can prevent abuse of the engine or lubricant. Abuse as I define it, is never changing oil, never changing the lube filters, complete carelessness with fresh oil installation, never checking oil and air breathers for clogging/dirtiness.

That’s my $0.03 worth.

Hope this helps…. And Im not a dealer either...
dwight

 

[Theowegian]

Ten thousand miles seems a tiny bit too far on an oil change with Delvac 1300.

If you suspect a problem with your injectors or you think you might have contamination or excessive wear occuring, then an oil test is a good thing to help you confirm your suspicions.

I would suggest that you consider using Delvac 1 instead of Delvac 1300.

The detergents, specifically, the additives are similar in all the Delvac series engine oils. You have perhaps heard that when you change oil brands, then increased oil consumption may temporarily occur. If you stay with Delvac 1, then you should notice NO change in oil consumption.
If it was my truck, I would probably go Delvac 1 and stay with the 10k drain interval and confirm it with oil testing if you want to spend the $$$.

Hope this helps.
dwight

 

[Garrabo]

After 409,000 miles without an oil change, the AMSOIL-protected Mack engine in this 1990 truck was wear-free as an engine in a comparable service treated to TWENTY TIMES the oil changes.


Is this missleading information.??

 

[Theowegian]

Misleading?

Maybe.
Maybe not.
Yawn.....

Im not too familiar with Amsoil. I hear that it is an excellent product. But I AM suspicious of anyone that makes fantastic claims.

"Wear free" in an internal combustion engine? That statement in itself is an oxymoron.

Now turn for my question.
Why does 99% of those kinds of statements occur from the sales departments or salesmen?

Reminds me of an argument I got into with a Royal Purple salesman a while ago.

I asked him if I used Royal Purple in one of our million dollar motors and the motor failed, would his company stand by his fantastic claims and pay for our company's down time costing us 1.25 million dollars/day? He was speechless! That fella wasnt willing to stand behind any of his fantastic claims. Im not trying to run down Royal Purple oil, Im just saying this Royal Purple saleman was a genuine jerk. He dogged me so badly that eventually, I had to threaten him with harrassment charges if he didnt leave me alone!

dwight

 

[KiotiJohn]

I don't give any oil much time to get contaminated as I change mine every 50 hours instead of the MFG recommended 100. I just like fresh oil in my tractor. Sure can't go wrong doing it too soon. Extended drain has never been of interest to me. Oil isn't that expensive. John

 

[Garrabo]

I dont know why I freak out when it comes to oil, Its an obsession.
perhaps im looking for something thats not there. I guess it all boils down to frequent / ontime oil changes. Is there really going to be a massive, anti-wear difference if you use synthetic .

 

[Garrabo]

Heres what delvac looks like around 30 hrs in a gas engine.

 

[KiotiJohn]

</font><font color="blue" class="small">( Heres what delvac looks like around 30 hrs in a gas engine. )</font>
No matter when I change my diesel oil, it never looks so good coming out as does oil from a gas engine! It's always dark dark dark. I know every 50 may be overkill, but it's an expensive piece of equipment and grease and oil is cheap in the long run. I suspect that most any properly API rated oil will do just fine at every 50. I'm not into leaving oil for long periods, but could probably be left a lot longer than one would think without the acidic changes that pit metals.
I've not used the synthetics in my tractor, but use them in my RV generator just fine. John

 

[gsxr1100]

1075- No the seal is not on some of their oils. Yes for the price it maybe should be on there. I tend to go by what the oil does, performs to what standards and the results. I have seen API cert oils perform badly. Is the API a nice" warm and fuzzy" sure.

Garrabo —Bingo. Is Delvac a great oil, maybe. Compared to what is the question.


Theowegian as you stated in #1 “:Oil analysis which can tell us when the lube is nearing the end of its useful life. For example, oil should be changed when the oxidation values (total base number values), and other additives, such as Barium, Phosphorus, Calcium have depleted or changed the point that an oil change is warranted. Long discussion, and I wont get into it. (Best time to change oil).”

A quick reply you can’t really say this since the TBN & OXD are not the same, integral yes but not the same. Should you change them when depleted yes, but my point from day 1 is that Delvac levels are low to being with. Also I would change the oil when the TBN is about 1.5 to 1, but that is me.

Low TBN to start means shorter interval. Next is if your elements are about to be depleted I would better get a new oil choice or something is very wrong. I have never seen low CA, P, or Ba, Zn levels in any oil I have tested.

Next one “2- Oil analysis can tell us if excessive wear is occurring in an engine thru identifying debris particles. For example, metallic particles such as chromium, nickel, tin do NOT belong in a diesel lube oil (this is machine distress, specifically, abnormal bearing wear)”.

Very true but you need to test an un-used sample before making any claim since the original un-used oil could/will have some metals in it. It is only a very small amount (ppm) but you need to know.

#3 “3-Oil analysis can tell us if contamination is occurring. For example, water intrusion or fuel dilution (this is machine distress, specifically jacket cooling water is leaking or fuel injectors are leaking)”.

All three should not say can on oil test, but does tell you what the questions are.


Garrabo Yes Amsoil did have the 409K mile truck and without oil changes. But the KEY factor here is the bypass the guy was running. No one talks about that. The by-pass is the key I feel. Never mind he is also running a FF filter.

Does Amsoil products work yes, but I also hate there marking since they take the BEST outcome with their oil and print a label for all.

Example, I use there 5-30 ASL oil. It is supposed to go up to 25K miles. The key with their 25K miles is their up to. It does not say 25K miles period. I just got an oil test back for my Lexus. After doing some basic math the oil could go tops 17K miles, or 18K pushing it. Have a look at the test (not bad for over 12K miles)
http://home.comcast.net/%7E94gsxr1100/lexus/oil/oil_test.pdf


KiotiJohn Yes are 100% correct. Is 50 hour mark overkill, could be or could not be. Depends on several factors. Is there ample time to get acidic and cause the TBN to lower and OXD levels to rise, yes. If you using a good oil, this lowering of TBN will come at a slower rate. I would be more worried about you metal rates rising vs TBN lowering and causing problems. Your TBN is one thing to see what is going on. Most things are integral here. If you TBN lowers you Nox and Oxd level rise. These levels will make soot or sludge form in the oil. This works wonders for turbo’s and other moving parts….Watch the metals levels rise like a rocket!

Will most API oils be fine, sure but I do not know what fine is? Is fine draining the oil at the 50 hour mark when the TBN is 1.1? Is the TBN at 3? TBN 7? Without knowing this and some other levels you do not even know if the oil is good or great from the start. If you TBN is only 9.1 to start with, it will probably need draining quicker then another oil with a TBN of 12.8. But on the flip side the TBN could stabilize over a few hours or miles.

Ok, I hear a "ding ding". Back to your corners! /forums/images/graemlins/cool.gif