SYNTHETIC OR REGULAR OIL? TELL ME

[Yaris Hilton]

I understood quite well, and that's what I'm arguing against. The 5K change interval is a conservative one. I'm NOT suggesting extending it. But I think it's silly to suggest that the base number analysis would suggest that the additive package of a GF-4 conventional oil would be nearly exhausted at 5K miles, but not in the synthetic. Base number analysis only indicates how much acid (mostly produced in combustion) has been neutralized by the basic additives in the oil. This kind of quasi-scientific talk really doesn't tell us that the engine is going to run better or last longer with an oil having better numbers, anyway.

[1stToyota]

Originally Posted by Yaris Hilton

I understood quite well, and that's what I'm arguing against. The 5K change interval is a conservative one. I'm NOT suggesting extending it. But I think it's silly to suggest that the base number analysis would suggest that the additive package of a GF-4 conventional oil would be nearly exhausted at 5K miles, but not in the synthetic. Base number analysis only indicates how much acid (mostly produced in combustion) has been neutralized by the basic additives in the oil. This kind of quasi-scientific talk really doesn't tell us that the engine is going to run better or last longer with an oil having better numbers, anyway.

Common sense would indicate that numbers that are suckier won't be as good for the motor.

And since you're eager to argue I'll be sure to be the one that backs up my feelings with UOAs on the M1 vs a premium GF-4 conventional oil. Yes, I'll pay the $10 extra bucks on each UOA to have the TBN that tests what's left of the additive packages. If I found out that Blackstone tells me to push that conventional oil another several thousand miles because it's still fresh as a daisy you'll be first to know.

[Yaris Hilton]

Fine. If you're doing oil analyses you have some basis for determining when the oil really needs changing. Doesn't make economic sense to me, but it's better than going by oil company ad claims.

[1stToyota]

Originally Posted by Yaris Hilton

Fine. If you're doing oil analyses you have some basis for determining when the oil really needs changing. Doesn't make economic sense to me, but it's better than going by oil company ad claims.

Doesn't make economic sense to me either because I'll probably always stick to a 5k OCI, using synthetic oil, but I guess it's worth it to run conventional oil once to see how it and its additive package holds up against a popular synthetic. However, it would be well worth it to the owner that wants to run synthetic and base their OCI on what the lab's TBN showed in a UOA.

[Yaris Hilton]

Whatever. I've been in an argumentive, cranky, vile, generally SOBish mood the last few days, and apologize if I've been offensive. But practically, I think good enough is good enough, and will stick with the factory recommendations.

[127.0.0.1]

Originally Posted by Yaris Hilton

Whatever. I've been in an argumentive, cranky, vile, generally SOBish mood the last few days, and apologize if I've been offensive. But practically, I think good enough is good enough, and will stick with the factory recommendations.

LOL is every 'oil' thread on the internet it is 99% what you describe above




the only people who need to do oil analysis are:

racers
anyone who modifies the engine in some way
engine designers

and then those who do it because they feel it fills
some emptiness inside themselves knowing yet some more useless data
about something they own

[1stToyota]

Originally Posted by 127.0.0.1

LOL is every 'oil' thread on the internet it is 99% what you describe above




the only people who need to do oil analysis are:

racers
anyone who modifies the engine in some way
engine designers

and then those who do it because they feel it fills
some emptiness inside themselves knowing yet some more useless data
about something they own

Yeah, you're so right. Guilty as charged. I just caught myself feeling so down and empty after committing myself to a $35.00 UOA on this 0w30 M1 I decided to pick myself back up about 10 minutes ago and put a deposit down on a 4000 sq ft shop; just sold my 6 bay shop and should be out of it June 15th. It's so unfair.