Started By
Message

re: Is synthetic oil a waste?

Posted on 1/11/14 at 11:56 am to
Posted by Clames
Member since Oct 2010
16560 posts
Posted on 1/11/14 at 11:56 am to
quote:

Calmes, by the time you notice TBNs getting low with conventional oil, it's picked up enough crap to alter the properties of synthetic oil significantly as well.


Wrong. Synthetic oils offer higher detergency which allows them to suspend contaminates better for the oil filter to pick them up. They don't shear down as badly, they have lower volatility, and better oxidation stability which are all properties that allow them to handle blow-by better than conventional oils.

quote:

Today's conventional oils are fantastic.


They are but they are still not where synthetics are. I'd put a top tier conventional oil against a low tier synthetic but there is no cost savings.

quote:

Crankcases are subjected to too much crap to justify extending change intervals because you put synthetic in it.


Wrong. Decades worth of research and SAE white papers contradict that statement. Both gas and diesel engines benefit from synthetic crankcase oils and extended OCI's. I change my oil every 7,500 miles in my daily driver and my other truck only needs annual oil changes. My F150 sat 3 years with Pennzoil Platinum in it and the cams and piston bores looked absolutely spotless when I finally got around to firing it back up again.
Posted by Sayre
Felixville
Member since Nov 2011
5507 posts
Posted on 1/11/14 at 11:57 am to
quote:

Synthetic oil in a crankcase is a waste. Conventional oil goes bad because of combustion blowby, not because it breaks down. Being synthetic doesn't protect the oil from blowby and it loads up just as quickly and needs to be changed at the same intervals.


This is completely untrue. I've personally seen the results of many oil analysis that say the exact opposite. You are very badly misinformed.
Posted by Redbone
my castle
Member since Sep 2012
18840 posts
Posted on 1/11/14 at 2:25 pm to
quote:


Sure it does. It's subjected to the same conditions such as blowby (to a lesser extent than diesel engines) and general crap loading from dust, condensation, etc.


I'm not saying it is zero. I'm saying it is not a factor in determining when to change the oil. Additives is the determining factor in engines that are in good running order. That is the reason synthetics can be used up to 25k miles. They are not cleaner at that point. They still have enough of the additives and still maintain lubricating properties up until that point.

Diesel engines are an entirely different animal hence the different ratings for diesel engine oil.
Posted by Redbone
my castle
Member since Sep 2012
18840 posts
Posted on 1/11/14 at 2:27 pm to
quote:

have you ever posted on TTORA.com?


No. Mostly on Dodge and then GM sites.
Posted by Hammertime
Will trade dowsing rod for titties
Member since Jan 2012
43030 posts
Posted on 1/11/14 at 3:25 pm to
quote:

Redbone, have you ever posted on TTORA.com?
I am an OG over there

Haven't been on in years, but it was designed to be a Tacoma forum. Went on many rides with the guys to Texas, north LA, Tenn, FL, etc. Founding member of the LA-TTORA chapter(along with one other guy)
Posted by TigerTatorTots
The Safeshore
Member since Jul 2009
80769 posts
Posted on 1/11/14 at 3:30 pm to
quote:

DIY for $25-$35 or go to an oil change place and get changed for $50-$75.

Jesus where do you get your oil changed? I get mine changed every 5,000 miles at Firestone for $25...tire rotation included too
This post was edited on 1/11/14 at 3:33 pm
Posted by Tiger in Texas
Houston, Texas
Member since Sep 2004
20868 posts
Posted on 1/13/14 at 10:06 pm to
quote:

A lot of mechanics will say that synthetic oil is just a waste of money


And sounds like you need a new mechanic...synthetic is proven to last longer and safer for your vehicle...
Page 1 2 3 4 5 6
Jump to page
first pageprev pagePage 6 of 6Next pagelast page
refresh

Back to top
logoFollow TigerDroppings for LSU Football News
Follow us on Twitter, Facebook and Instagram to get the latest updates on LSU Football and Recruiting.

FacebookTwitterInstagram