Re: Synthetic Oil Problems???

Reply
 
LinkBack Thread Tools Display Modes
Old 14 Oct 2004, 04:43 pm   #1 (permalink)
drumpaul
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

After going thru a recent de-sludging, I was told by a mechanic that I may
have initiated the problem when switching to synth. The engine had 60,000
miles when I got the car. I went straight to 20-50 synth castrol. He
contends that when doing this, you must run the new synth oil up to
operating temp, then immediately drain it, then fill with more synth and
go. He says the synth fights with the remnants of the carbon-based oil. I
have had three other mechanics refute this theory, however.

  Reply With Quote
Old 14 Oct 2004, 07:34 pm   #2 (permalink)
JP
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

I don't know if all synthetic oils work the same as far as cleaning but I
know that their quality vary.
Amsoil, Mobil 1 are among the best. From what I heard, Castro and Quaker
State are apparently at or near the bottom of the quality scale. But that's
beside the point.
When I switched to synthetic oil, I was told that it is recommended to do an
"engine flush" prior to fill the engine with synthetic oil. The reason I was
given is that the detergent in the oil will clean the sludge accumulated.
OR, you can use a quart/liter of synthetic in your engine, run it a few
hundred miles and then drain. If you don't drain, the sludge could clog your
filter.
So, your mechanic may not be wrong at all!
This being said, I switched to synthetic shortly after buying my used 93
Camry last year. It had 234,000 kms when I did the "flush". The car runs
like a charm.

JP


drumpaul wrote:
> After going thru a recent de-sludging, I was told by a mechanic that
> I may have initiated the problem when switching to synth. The engine
> had 60,000 miles when I got the car. I went straight to 20-50 synth
> castrol. He contends that when doing this, you must run the new
> synth oil up to operating temp, then immediately drain it, then fill
> with more synth and go. He says the synth fights with the remnants of
> the carbon-based oil. I have had three other mechanics refute this
> theory, however.



  Reply With Quote
Old 14 Oct 2004, 08:40 pm   #3 (permalink)
ROBMURR
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

Why did you go to such a heavy oil? 20-50?
I thought most synth were like 5-20 these days.
In this message you said it was Castrol, another
message said it was Lucas oil. You didnt add any
of the nasty Lucas oil stabilizer did you?

  Reply With Quote
Old 14 Oct 2004, 10:45 pm   #4 (permalink)
Philip
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

drumpaul wrote:
> After going thru a recent de-sludging, I was told by a mechanic that
> I may have initiated the problem when switching to synth. The engine
> had 60,000 miles when I got the car. I went straight to 20-50 synth
> castrol. He contends that when doing this, you must run the new
> synth oil up to operating temp, then immediately drain it, then fill
> with more synth and go. He says the synth fights with the remnants of
> the carbon-based oil. I have had three other mechanics refute this
> theory, however.



Sounds like a bit scoop of Bandini to me too.
--

-Philip


  Reply With Quote
Old 14 Oct 2004, 10:45 pm   #5 (permalink)
Philip
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

ROBMURR wrote:
> Why did you go to such a heavy oil? 20-50?
> I thought most synth were like 5-20 these days.
> In this message you said it was Castrol, another
> message said it was Lucas oil. You didnt add any
> of the nasty Lucas oil stabilizer did you?



Mobil1 comes in a WIDE range of viscosities.

http://www.mobil1.com/index.jsp

Click on Mobil1 Products tab,

click on Mobil1 SuperSyn.

Notice the range of viscosities. Click on any of them.
--

-Philip


  Reply With Quote
Old 15 Oct 2004, 07:41 am   #6 (permalink)
Daniel M. Dreifus
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

robmurr@aol.com (ROBMURR) wrote in message news:<20041014214032.15036.00004967@mb-m02.aol.com>...
> Why did you go to such a heavy oil? 20-50?
> I thought most synth were like 5-20 these days.
> In this message you said it was Castrol, another
> message said it was Lucas oil. You didnt add any
> of the nasty Lucas oil stabilizer did you?


Hey, I resemble that remark.
Lucas isn't nasty, it's nice.
  Reply With Quote
Old 15 Oct 2004, 07:53 am   #7 (permalink)
ROBMURR
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

You may want to take a look here before
you dump that Lucas stuff into anything.
http://www.bobistheoilguy.com/images/lucas/lucas.htm

  Reply With Quote
Old 15 Oct 2004, 10:48 am   #8 (permalink)
Philip
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

ROBMURR wrote:
> You may want to take a look here before
> you dump that Lucas stuff into anything.
> http://www.bobistheoilguy.com/images/lucas/lucas.htm



I tried that Lucas stabilizer (thickener) in a Datsun 5 speed that had noisy
gears (lots of chatter when hot, idling in Neutral). The mix was 50-50 90w
GL4 lube and Lucas. Didn't make any significant improvement in the noise.
When I drained it out a week later, (hot condition), the oil ran out very
aerated .... just like in the photos at the above link.
--

-Philip



  Reply With Quote
Old 15 Oct 2004, 11:58 am   #9 (permalink)
ROBMURR
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

> tried that Lucas stabilizer (thickener) in a Datsun 5 speed that had noisy
>gears (lots of chatter when hot, idling in Neutral). The mix was 50-50 90w
>GL4 lube and Lucas. Didn't make any significant improvement in the noise.
>When I drained it out a week later, (hot condition), the oil ran out very
>aerated .... just like in the photos at the above link.
>--
>
> -Philip


Yeah, I thought it would make a good chain lube for my bicycles
but it wasn't even good for that..It sure looks like that good old
stuff from the 1960's called STP...My god they still make that crap!
www.stp.com/faq_oil.html
Sticking with Dino Pennzoil and Purolator or OEM filters for me.
  Reply With Quote
Old 15 Oct 2004, 06:19 pm   #10 (permalink)
Daniel M. Dreifus
Guest
  • Posts: n/a
  • User Status:


Default Re: Synthetic Oil Problems???

robmurr@aol.com (ROBMURR) wrote in message news:<20041015125833.03602.00002334@mb-m04.aol.com>...
> > tried that Lucas stabilizer (thickener) in a Datsun 5 speed that had noisy
> >gears (lots of chatter when hot, idling in Neutral). The mix was 50-50 90w
> >GL4 lube and Lucas. Didn't make any significant improvement in the noise.
> >When I drained it out a week later, (hot condition), the oil ran out very
> >aerated .... just like in the photos at the above link.
> >--
> >
> > -Philip

>
> Yeah, I thought it would make a good chain lube for my bicycles
> but it wasn't even good for that..It sure looks like that good old
> stuff from the 1960's called STP...My god they still make that crap!
> www.stp.com/faq_oil.html
> Sticking with Dino Pennzoil and Purolator or OEM filters for me.


Guess what. I'm not the great defender of Lucas products.
Never had any aeration though, and they work well for me. Always
figured Bob the oil guy had a contrived test and just spun the gears
too fast. Fluids look perfectly normal after hard use, though I've
never added it to a standard transmission. I did try adding STP once
to the 5 speed in the Toyota truck. Made the synchros too slick -
wouldn't shift properly, drained it all back out. Used Valvoline gear
oil with some red syrupy additive I got from a laundry truck mechanic,
has been in there ever since working well. I think STP also had some
problems with the FTC over misrepresentation.
For the mountain bike chain and derailler recently switched to
TriFlow, which also seems to work well on the Camry power antenna.
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 04:00 pm.

Attribution:
Autoblog
Powered by Yahoo Answers



ToyotaLexusForum.com is an unofficial community for car enthusiasts. ToyotaLexusForum.com is not affiliated with Toyota Motor Corporation in any way.
Toyota Motor Corporation does not sponsor, support, or endorse ToyotaLexusForum.com in any way.
Copyright/trademark/sales mark infringements are not intended or implied.