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Anybody,your option on synthetic motor oil for a 440? #427728
08/03/09 08:30 PM
08/03/09 08:30 PM
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Connecticut, USA
sixty7gtx Offline OP
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Anybody,option on synthetic motor oil for a 440/426 ??? 15/40 ok on a old 440 or 426 hemi??

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MOPAR = Machines Of Performance And Racing!!
Re: Anybody,your option on synthetic motor oil for a 440? [Re: sixty7gtx] #427729
08/03/09 08:39 PM
08/03/09 08:39 PM
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Grand Prairie,Texas
stumpy Offline
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Synthetic oil if fine. Nothing wrong with using it.

Re: Anybody,your option on synthetic motor oil for a 440? [Re: stumpy] #427730
08/03/09 08:57 PM
08/03/09 08:57 PM
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NW of Indy
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Thackdaddy Offline
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Take the time to put new gaskets on, the 1st time I put it in my 440 I did not and I had a heck of a mess. I also use 3M weatherstrip adhesive as a sealer.

Re: Anybody,your option on synthetic motor oil for a 440? [Re: Thackdaddy] #427731
08/03/09 09:07 PM
08/03/09 09:07 PM
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Connecticut, USA
sixty7gtx Offline OP
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Quote:

Take the time to put new gaskets on, the 1st time I put it in my 440 I did not and I had a heck of a mess. I also use 3M weatherstrip adhesive as a sealer.




ok,,, thanks...


1967 Plymouth GTX,
1968 HEMI, 4 Spd. Super Bee,
2010 Chrysler 300 Touring,

MOPAR = Machines Of Performance And Racing!!
Re: Anybody,your option on synthetic motor oil for a 440? [Re: sixty7gtx] #427732
08/03/09 09:08 PM
08/03/09 09:08 PM
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With the oil these days and the flat-tappet probs now ... I am just going to stick-with a good SL rated Dino oil.

Re: Anybody,your option on synthetic motor oil for a 440? [Re: sixty7gtx] #427733
08/03/09 09:23 PM
08/03/09 09:23 PM
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Ontario, Canada
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Stanton Offline
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What the hell does switching to synthetic have to do with gaskets leaking ?!?!?!?

Re: Anybody,your option on synthetic motor oil for a 440? [Re: Stanton] #427734
08/03/09 10:01 PM
08/03/09 10:01 PM
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Montana
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Posest Offline
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In my experience synthetic will find any and all spots that are prone to a leak. I tried it on a 318 I had in my Demon and it leaked from the pan gaskets, valve cover gaskets and the 90* oil filter adapter. I changed these gaskets and ended going back to regular oil. It never leaked before this.

Re: Anybody,your option on synthetic motor oil for a 440? [Re: Posest] #427735
08/03/09 10:07 PM
08/03/09 10:07 PM
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Connecticut, USA
sixty7gtx Offline OP
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2010 Chrysler 300 Touring,

MOPAR = Machines Of Performance And Racing!!
Re: Anybody,your option on synthetic motor oil for a 440? [Re: sixty7gtx] #427736
08/04/09 02:22 AM
08/04/09 02:22 AM
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Virginia
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MACDiesel Offline
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AMSOIL 10w40 and good napa style filters never fail.


-1967 Belvedere II 440/4speed
Re: Anybody,your option on synthetic motor oil for a 440? [Re: MACDiesel] #427737
08/04/09 03:09 AM
08/04/09 03:09 AM
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Russiaville, IN
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I have been using Penzoil 10w30 full synthetic with Wix filters for over 10 years.

It is hard to keep the motors sealed. Synthetic does tend to find a leak.


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Re: Anybody,your option on synthetic motor oil for a 440? [Re: Stanton] #427738
08/04/09 11:03 AM
08/04/09 11:03 AM
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SomeCarGuy Offline
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Quote:

What the hell does switching to synthetic have to do with gaskets leaking ?!?!?!?




Lots.

You will no longer have crud up against the sealing areas to keep it from leaking.


I want my fair share
Re: Anybody,your option on synthetic motor oil for a 440? [Re: Stanton] #427739
08/04/09 11:13 AM
08/04/09 11:13 AM
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NW Indiana
deansrr Offline
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Quote:

What the hell does switching to synthetic have to do with gaskets leaking ?!?!?!?




synthetic's flow much better, which why they can leak over regular oils, also why it's better, been using synthetic oil's in my cars for over 25 years.

how and when will your car be driven?


1973 Road Runner 1974 Satellite (for sale) 1973 240z (wifes) 1993 Ramcharger (thanks Devil) 2002 Honda S2000
Re: Anybody,your option on synthetic motor oil for a 440? [Re: sixty7gtx] #427740
08/04/09 11:28 AM
08/04/09 11:28 AM
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Texas
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shart70rt Offline
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AmsOil makes a great 20W50 Full Synthetic Racing Oil that I have used for many years in 440's. I live in the South, with many days of 100+ degree weather, so I prefer the heavier 20/50 blend. New motors need adequate break in on standard oil first, to prevent ring break in problems (AmsOil lowers friction to the point that new rings may not seat). It also cleans up gunk in dirty engines, so a good engine flush should be done first, followed by gasket changes when leaks appear on older engines.


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Re: Anybody,your option on synthetic motor oil for a 440? [Re: shart70rt] #427741
08/04/09 12:22 PM
08/04/09 12:22 PM
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San Jose, California
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DennisH Offline
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Use street oil. 10-40 Royal Purple in the 440. Looks clean inside valve cover. Switched to Amsoil this change. Less cost, better claimed peerformance.

Re: Anybody,your option on synthetic motor oil for a 440? [Re: sixty7gtx] #427742
08/04/09 02:28 PM
08/04/09 02:28 PM
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Stevensville, ON
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Frank Raso Offline
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You can use safely use a synthetic oil for your 440 but 15W-40 is a conventional/dino grade of Heavy Duty Engine Oil (HDEO). HDEOs have higher levels of phosphorus (the antiwear component of ZDDP) than Starburst Oils and a CI-4/SL HDEOs generally have the highest levels of phosphorus.

If you're using 10W-30, you can also use a synthetic 30-weight HDEO but these are generally 0W-30 and 5W-30 grades because synthetics flow extremely well at low temperatures. Being a synthetic, they also don't thin out as quickly as a straight SAE 30 or 10W-30 dino oil.

Heavy Duty Engine Oils

Re: Anybody,your option on synthetic motor oil for a 440? [Re: Frank Raso] #427743
08/04/09 07:06 PM
08/04/09 07:06 PM
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Canuckville
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Rebuilt my 440 in 2004.
After intial break in with cheap oil,I have been using 20W50 Mobil 1 synthetic ever since.
Nooo problems after 5 years of beating the snot out if it.


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Re: Anybody,your option on synthetic motor oil for a 440? [Re: DennisH ] #427744
08/04/09 07:37 PM
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Quote:



Switched to Amsoil this change. Less cost,






Amsoil ? .. less cost ?? ... I went into a large Napa outlet last week and noticed an Amsoil display ...and was almost floored ....

$ 10.90 per quart ..

There is GOOD syn oil out there ... that anyone can buy that is about 15 beans .. for FIVE quarts.

Re: Anybody,your option on synthetic motor oil for a 440? [Re: sixty7gtx] #427745
08/04/09 07:43 PM
08/04/09 07:43 PM
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Pacific NW USA
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Fact: An SAE 20W-50 conventional motor oil flows the same as a SAE 20W-50 Synthetic motor oil. If they are both rated with the SAE spec. then they must flow the same at engine operating temp. Now if we are talking cold temperature flow, synthetics almost always flow better than conventional oils in cold temps.

Fact: Synthetic motor oil does not cause leaks. Leaks can occur any time you change brands or types of motor oils whether it be conventional or synthetic.

Some motor oils can leave behind deposits which can act as a supplemental seal on higher mileage engines. If your main crank seal is bad and you have gunk protecting it from oil deposits, then you probably have no-or-minimal leaks. Now you switch to another brand; it could be conventional or synthetic, both of which have differing levels of detergents and other additives than the oil that you were just using. These differing additives eat away at the gunk that was acting as a supplemental seal and now you have a leak.

The issue was not the oil change, but rather a worn out crank seal.

Fact: There are many synthetic motor oils that have the same or higher levels of Zinc and Phosphorous as Heavy Duty Engine Oil (HDEO).

Example:


Re: Anybody,your option on synthetic motor oil for a 440? [Re: dIc dOc Deity !] #427746
08/04/09 07:49 PM
08/04/09 07:49 PM
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Pacific NW USA
CompSyn Offline
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Quote:

Quote:



Switched to Amsoil this change. Less cost,






Amsoil ? .. less cost ?? ... I went into a large Napa outlet last week and noticed an Amsoil display ...and was almost floored ....

$ 10.90 per quart ..

There is GOOD syn oil out there ... that anyone can buy that is about 15 beans .. for FIVE quarts.




DennisH is not talking about On-The-Shelf-Retail cost as you saw at Napa. He's talking wholesale cost.

Re: Anybody,your option on synthetic motor oil for a 440? [Re: CompSyn] #427747
08/04/09 08:55 PM
08/04/09 08:55 PM
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Connecticut, USA
sixty7gtx Offline OP
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Quote:

Fact: An SAE 20W-50 conventional motor oil flows the same as a SAE 20W-50 Synthetic motor oil. If they are both rated with the SAE spec. then they must flow the same at engine operating temp. Now if we are talking cold temperature flow, synthetics almost always flow better than conventional oils in cold temps.

Fact: Synthetic motor oil does not cause leaks. Leaks can occur any time you change brands or types of motor oils whether it be conventional or synthetic.

Some motor oils can leave behind deposits which can act as a supplemental seal on higher mileage engines. If your main crank seal is bad and you have gunk protecting it from oil deposits, then you probably have no-or-minimal leaks. Now you switch to another brand; it could be conventional or synthetic, both of which have differing levels of detergents and other additives than the oil that you were just using. These differing additives eat away at the gunk that was acting as a supplemental seal and now you have a leak.

The issue was not the oil change, but rather a worn out crank seal.

Fact: There are many synthetic motor oils that have the same or higher levels of Zinc and Phosphorous as Heavy Duty Engine Oil (HDEO).

Example:

[/quote



What is a good zine level, ? ppm?


1967 Plymouth GTX,
1968 HEMI, 4 Spd. Super Bee,
2010 Chrysler 300 Touring,

MOPAR = Machines Of Performance And Racing!!
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