Re: synthetic oil comparison
 

I've been using Rotella for the past six months after the big reduced-zinc content scare became common public knowledge. I used Mobil One for 20 years before that but they took the ZDDP out of it too. I've done a lot of reading on this subject and in 2007, diesel oils such as Rotella are slated for reduced ZDDP content. So I wouldn't get to used to putting it in the old cars. So now I'm onto Valvoline Racing oil 20W50 and for added measure I put in a small bottle of GM cam and lifter oil prelube at every oil change. Just did a large solid lifter camshaft break-in recently with monster valve springs and everything seems to be fine so far. Fingers crossed.

Re: synthetic oil comparison
 

[ QUOTE ]
Rob Clary, what are you running in the Yenko?

[/ QUOTE ]
Castrol Syntec, 10w/30

Re: synthetic oil comparison
 

Thanks for your post fellas. Craig, that bobistheoilguy.com site is great!! Everyone here should check it out. https://www.yenko.net/ubbthreads/imag...iggthumpup.gif

Re: synthetic oil comparison
 

<font color="blue">I have always used Kendall 40 wt. Race oil in my engines, never had any oiling problems, but since Kendall sold out &amp; changed their product, I don't know what I will use anymore ... https://www.yenko.net/ubbthreads/imag...mlins/hmmm.gif

Here's an oil story for you:

I just sold a customer rebuild parts for a Ford 302 he put in a '63 Comet.
I gave him a Comp. Cams Hyd. Cam &amp; lifter kit with an MSD distributor.
The break in seamed to go well until about 5 hours later.
The engine stoped running ... https://www.yenko.net/ubbthreads/imag...s/confused.gif... checked fuel, O.K., checked spark, N/G. Pulled the cap off &amp; the rotor was not spinning. Pulled the dist. out &amp; the gear was worn like it had 150,000 miles on it. The cam had 5 worn lobes &amp; 2 lifters were almost worn through!
I called Comp. Cams &amp; went over everything, they sent me a new cam &amp; lifter kit &amp; told me to use the new Poly Gear.
(side note: the original stuff that came out of the engine with 65,000 miles on it looked fine.)
The custome said he had 60lbs of oil pressure during break-in &amp; about 15lbs at idle, seems typical Ford to me.
Put in all the new parts, rechecked everything ... 8 hours later, a valve tap ... https://www.yenko.net/ubbthreads/images/graemlins/no.gif ... Cam &amp; lifters worn out, one good note, that poly dist. gear still looked new.
Engine is out &amp; back apart now.

looking on the Comp. Cams website one night trying to see if there is a situation with their product I came across a bulletin about breaking in your new engine with ... ROTELLA ... hmm, no one mentioned this to me on the phone, well we will search for another problem first &amp; then try this oil. </font>

click here --&gt; ROTELLA bulletin

Re: synthetic oil comparison
 

Hmmmmm....the EPA again doing more harm than good.

This question pops up relentlessly on automotive boards. The only way to get the correct answer is to ask the big guy. "God, what would Jesus run?" He said to me, "RP Racing. How can you go wrong with purple engine oil?"
Oh, he also said don't believe everything you read on BTOG.

That ended the oil debate for me.

Re: synthetic oil comparison
 

Mobil 1 in everything for me. All the products on the market are good, I have seen a lot of test comparisons between them all and depending on who did the testing, thats how the results end up. I have 250K on my '94 GM daily driver, I just changed the V/C gaskets and it still looks brand new under there. My $.02
https://www.yenko.net/ubbthreads/imag...mlins/flag.gif

Re: synthetic oil comparison
 

NOCOPO: the thing about is, is that all new(er) engines are manufactured with the newer oils in mind...which means the oil mans are gonna cater to the folks buttering their bread, not folks like us living with 30+ year old technology...

On a similar note, yesterday I picked up our Dmax dually from getting the rear rebuilt...I asked them about synthetic vs. dino gear lube, and he told me he's not sold on the synthetics...said his experience has been that the synth lube will darken and degrade sooner than it's dino lube counterpart...he even had a TSB from Ford stating that the synth lube in the trucks from the factory was to be dumped in favor of the tried &amp; true dino based 80w/90 lube...just something to think about.

Re: synthetic oil comparison
 

Had a S/S buddy tell me of a recently developed Valvoline Synthetic racing oil...says it has added zinc and other additives to keep our dinosaur BBC's alive &amp; well...I don't have a bottle in my hands yet, but hope to nab some soon and I'll report back. Otherwise, sounds like it's eeny-meenie-miney-mo to pick your oil, then dump in a moly additive or a bottle of GM EOS...

Re: synthetic oil comparison
 

[ QUOTE ]
I have always used Kendall 40 wt. Race oil in my engines, never had any oiling problems, but since Kendall sold out &amp; changed their product, I don't know what I will use anymore ... https://www.yenko.net/ubbthreads/imag...mlins/hmmm.gif

Here's an oil story for you:

I just sold a customer rebuild parts for a Ford 302 he put in a '63 Comet.
I gave him a Comp. Cams Hyd. Cam &amp; lifter kit with an MSD distributor.
The break in seamed to go well until about 5 hours later.
The engine stoped running ... https://www.yenko.net/ubbthreads/imag...s/confused.gif... checked fuel, O.K., checked spark, N/G. Pulled the cap off &amp; the rotor was not spinning. Pulled the dist. out &amp; the gear was worn like it had 150,000 miles on it. The cam had 5 worn lobes &amp; 2 lifters were almost worn through!
I called Comp. Cams &amp; went over everything, they sent me a new cam &amp; lifter kit &amp; told me to use the new Poly Gear.
(side note: the original stuff that came out of the engine with 65,000 miles on it looked fine.)
The custome said he had 60lbs of oil pressure during break-in &amp; about 15lbs at idle, seems typical Ford to me.
Put in all the new parts, rechecked everything ... 8 hours later, a valve tap ... https://www.yenko.net/ubbthreads/images/graemlins/no.gif ... Cam &amp; lifters worn out, one good note, that poly dist. gear still looked new.
Engine is out &amp; back apart now.

Looking on the Comp. Cams website one night trying to see if there is a situation with their product I came across a bulletin about breaking in your new engine with ... ROTELLA ... hmm, no one mentioned this to me on the phone, well we will search for another problem first &amp; then try this oil.

click here --&gt; ROTELLA bulletin

[/ QUOTE ]


<font color="blue">UPDATE:
Put a new cam &amp; lifter kit in the 302 (Crane (customers a little jittery) &amp; he used Rotella 15w40 to break it in.
He has driven the car about 200 miles so far without a noise or anything.
Seems to have been the whole problem.
http://ec1.images-amazon.com/images/...CLZZZZZZZ_.jpg https://www.yenko.net/ubbthreads/imag...iggthumpup.gif https://www.yenko.net/ubbthreads/imag...iggthumpup.gif Two thumbs up for Rotella T. </font>

Re: synthetic oil comparison
 

I saw some synthetic diesel at O'Reilly the other day. Brand name but I can't remember what. What would be wrong with that?