Reasons to NOT Use Synthetic?

[Vern_in_IL]

Reasons to NOT Use Synthetic?

Price.

 

[Rand]

I should also mention that 3 weeks later, he burned that car to the ground trying to do his own electrical work in the engine bay. He insisted the 110 octane fuel he was using burned hotter than "normal fuel" ("white hot" were his words) and the car wouldn't have burned down completely if he'd been using a lower octane fuel. He was a character for sure.

maybe the lead vapors from his 110 octane fuel had an effect?

 

[grisby]

The old graphite impregnated rope seals used many years ago could have issues when they were old and early ester synthetics were used.
The truth is these seals were worse than tom cats, they liked to mark their spot everywhere they went anyway, the synthetic oil just made them a little worse. The last rope seal I installed that could not be converted to a rubber one was many decades ago on an old Buick front timing cover.
Anyone who has used a Chinese finger knows what I am talking about.

Yep, used those chinese fingers many times in the past(Buick and Pontiacs 455 had them in the day)

 

[Donald]

FACTS

Fact about why one should not use synthetic oil or facts proving PO is on meth?

 

[userfriendly]

User friendly: ya gotta stop, I’m dying down here

Yeah, ok. The rest is classified anyway.
I remember her name.... Erica Butter Bean Esch.

 

[NismoNVT]

Have you asked the PO?

 

[PaulyWally]

Have you asked the PO?

Wasn’t the moral of the story here to not trust a meth head?

To be honest, I didn’t think much of it at the time. I took it with a grain of salt because I know lots of guys (very knowledgeable mechanics) that run full synth in much older cars. I just got to thinking, maybe I should just double check with folks here. I’ve never been led astray on this forum.

 

[JavierH19]

Price.

With hdeo yeah but with regular SP oil eh. Maybe if it's chevron supreme syn blend.

 

[lawrencerd]

My uncle's cousin's former roommate used it once, and it caused a leak

 

[joegreen]

Pretty sure the Germans used synthetic in ww2 because of crude oil shortages. Worked back then, works now

 

[ArthurArgentum]

Price.

After the Mobil AV 1 case, certain reasons were mentioned, even in advertising. It is quite uncommon for the drawbacks of PAO to be explicitly acknowledged in such applications and their advertisements.

 

[JohnnyJohnson]

I can count the reason not to use

Synthetic​

on no fingers!

 

[PimTac]

I didn’t know this Mustang was a plane?

 

[SeaJay]

Conventional is cheaper.

 

[SavetheRimBrake]

Boomers say the darnest things

 

[NormanBuntz]

How about if your vehicle is 15+ years old, you only drive it 3-5K miles a year and you want to do annual oil changes? Sometimes all you need on an older vehicle is a solid synthetic blend.

 

[Zee09]

What of the most ridiculous threads to be created lately....

Was, until I said what does the Post Office know about oil ?(PO)

 

[GMBoy]

The old graphite impregnated rope seals used many years ago could have issues when they were old and early ester synthetics were used.
The truth is these seals were worse than tom cats, they liked to mark their spot everywhere they went anyway, the synthetic oil just made them a little worse. The last rope seal I installed that could not be converted to a rubber one was many decades ago on an old Buick front timing cover.
Anyone who has used a Chinese finger knows what I am talking about.

True story - my 87 Buick GN that I still own and bought new leaked oil at the rear main seal and was repaired under warranty 3 times. The rope seal I think moved some under boost is my theory - but anyhow they all leaked when new! Sometime in 1988 a company called Applied Technology & Research (ATR) was cranking out some good turbo buick stuff and they had a 1 pc rubber seal upgrade. I begged the dealer to install it since they couldn't fix the leak in 3 times - they agreed. I provided the seal, they installed under warranty and it has not leaked since and she has 70k on it today still dry. I was the reason they began stocking that very seal to repair turbo buick rear main leaks. That car has seen nothing but Mobil 1 full syn

 

[NormanBuntz]

Was, until I said what does the Post Office know about oil ?(PO)

With the largest fleet of commercial vehicles in the nation, the USPS buys a lot of motor oil so its procurement people should know something about it.

 

[Zee09]

With the largest fleet of commercial vehicles in the nation, the USPS buys a lot of motor oil so its procurement people should know something about it.

Yeah just like mail delivery