new 383...what oil

Automotive powered airboat discussion.
Post Reply
swampthing3
Southern Airboat Member
Posts: 5
Joined: Tue May 14, 2019 10:12 am

new 383...what oil

Post by swampthing3 » Tue May 14, 2019 10:24 am

Hi all. I got a boat with a fresh 383 on it that still has break in oil in it.

It has 23 hours on it. I want to change the oil. What would be a good weight/brand to run?

Thanks!

jamesskycop
Southern Airboat Member
Posts: 1
Joined: Mon Apr 16, 2018 12:37 pm

Re: new 383...what oil

Post by jamesskycop » Tue May 14, 2019 10:37 am

I like Royal Purple 10/40 full synthetic....

swampthing3
Southern Airboat Member
Posts: 5
Joined: Tue May 14, 2019 10:12 am

Re: new 383...what oil

Post by swampthing3 » Tue May 14, 2019 11:17 am

What would be the advantage of synthetic over conventional? Extra heat and load being put on the engine?

Rich Andrews
Site Supporter - IV
Site Supporter - IV
Posts: 6846
Joined: Wed Jun 15, 2005 9:20 pm

Re: new 383...what oil

Post by Rich Andrews » Tue May 14, 2019 11:54 am

might want to ask the builder of the motor the clearance specs before you go about putting oil in it...
Big Ole Deckover in the making...

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2901
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: new 383...what oil

Post by SWAMPHUNTER45 » Tue May 14, 2019 12:32 pm

Rich gave you great advice. Look and see on your paper work if the seller provided any info on an oil requirement.

Is the engine roller or flat tappet?

YOU WILL DESTROY THE ENGINE IF IT IS FLAT TAPPET AND YOU FAIL TO PROVIDE AN OIL WITH ZZDP

swampthing3
Southern Airboat Member
Posts: 5
Joined: Tue May 14, 2019 10:12 am

Re: new 383...what oil

Post by swampthing3 » Tue May 14, 2019 12:47 pm

I got the boat 3rd hand. I was told its roller.

That being said, I cant prove it without taking it apart. It runs perfect and want to continue that way. Just to be safe, should I run oil with zinc just to be sure? Is there a negative effect if its a roller lifter and I run the zinc oil?

User avatar
smokster
Southern Airboat Member
Posts: 139
Joined: Sat Jul 28, 2007 8:38 pm
Location: Interlachen FL.

Re: new 383...what oil

Post by smokster » Tue May 14, 2019 1:49 pm

cant go wrong with 10w 40 amsoil z-rod. thats what glen treadwell recommends for his motors even roller motors. use a good oil filter and change it about twice a year

swampthing3
Southern Airboat Member
Posts: 5
Joined: Tue May 14, 2019 10:12 am

Re: new 383...what oil

Post by swampthing3 » Tue May 14, 2019 3:05 pm

been doing some reading, the Valvoline VR1 sounds like a good one. they have 10w-30 and 20w-50 synthetic. Not knowing the clearences exactly, would the thicker oil be a safer bet?

hdsadey
Southern Airboat Member
Posts: 245
Joined: Sun Jul 01, 2012 7:42 pm
Location: venice fl.

Re: new 383...what oil

Post by hdsadey » Tue May 14, 2019 3:22 pm

I run Valvoline VR1 Racing 20w-50 on a direct drive solid flat tappet 408 Windsor. Joe Gibbs also makes flat tappet oils. I like conventional oils, no synthetics for me! Any idea what weight the break in oil is? 10 psi per 1k RPM is the general rule. If you know what's in there now and idle pressure, you can adjust with weight.
02 Predator 12' 0320 Lycoming
92 Big O 13' Ford 408 Windsor DD Dry Runnin MOFO!
99 Donzi 16 Classic 350 Vortec

swampthing3
Southern Airboat Member
Posts: 5
Joined: Tue May 14, 2019 10:12 am

Re: new 383...what oil

Post by swampthing3 » Tue May 14, 2019 3:52 pm

Why do you like the conventional over synthetic?

current pressure at idle is just over 40 pounds

hdsadey
Southern Airboat Member
Posts: 245
Joined: Sun Jul 01, 2012 7:42 pm
Location: venice fl.

Re: new 383...what oil

Post by hdsadey » Tue May 14, 2019 7:22 pm

Synthetics are designed for newer power plants in my opinion. They don't seem to get along with old style gaskets and like to leak. Just my opinion. LS is fine with synthetics but not old sbc's. 40 psi at an idle is WAY high for my liking. Probably has a high volume pump which is also not needed unless bearing clearances have been purposely opened up or worn out. I posted a thread awhile back about high volume pumps. Puts a lot of stress on distributor gear. If it was me I would swap the pump out for a standard volume pump, your engine will thank you in the long run.
02 Predator 12' 0320 Lycoming
92 Big O 13' Ford 408 Windsor DD Dry Runnin MOFO!
99 Donzi 16 Classic 350 Vortec

User avatar
dodobird
Site Supporter - II
Site Supporter - II
Posts: 473
Joined: Sat Aug 11, 2012 9:05 pm
Location: havana fl

Re: new 383...what oil

Post by dodobird » Tue May 14, 2019 8:02 pm

If flat tappet VR1 has high zinc I use 50w

Sent from my [device_name] using Southern Airboat mobile app powered by Tapatalk
13' laser 360sbc oxdrive 2.68 .... 80" 3 blade whispertip ex :florida:

barhopper
Site Supporter - II
Site Supporter - II
Posts: 712
Joined: Sat May 14, 2005 12:23 pm
Location: ocala

Re: new 383...what oil

Post by barhopper » Wed May 15, 2019 6:17 pm

Brad Penn 20 50 is my choice of oil. High zinc content.

pierson skunkape
Site Supporter - II
Site Supporter - II
Posts: 95
Joined: Wed Sep 04, 2013 1:11 pm

Re: new 383...what oil

Post by pierson skunkape » Wed May 29, 2019 12:43 pm

I've been an amsoil dealer for almost 45 years at my muffler shop...I grew up racing dirt bikes with this stuff I believe there is no.. as far as Royal purple junk in my opinion.. amsoil oil is the only oil that can take 25000 mile dump interval ask around fact... 23 hours on break in oil get it out of there... The is Iran oil is great and has plenty of zinc in it...I had over $600 on my last 383 I just got rid of direct drive.... If you do go with a z rod high zinc formula... The 25,000 miles will never be achieved just change it every year or every hundred hours.... Just my humble opinion piece out

User avatar
dodobird
Site Supporter - II
Site Supporter - II
Posts: 473
Joined: Sat Aug 11, 2012 9:05 pm
Location: havana fl

Re: new 383...what oil

Post by dodobird » Thu May 30, 2019 6:14 am

pierson skunkape wrote:I've been an amsoil dealer for almost 45 years at my muffler shop...I grew up racing dirt bikes with this stuff I believe there is no.. as far as Royal purple junk in my opinion.. amsoil oil is the only oil that can take 25000 mile dump interval ask around fact... 23 hours on break in oil get it out of there... The is Iran oil is great and has plenty of zinc in it...I had over $600 on my last 383 I just got rid of direct drive.... If you do go with a z rod high zinc formula... The 25,000 miles will never be achieved just change it every year or every hundred hours.... Just my humble opinion piece out
I agree I used the royal purple n it was junk I wouldn't put that stuff on a bicycle chain

Sent from my [device_name] using Southern Airboat mobile app powered by Tapatalk
13' laser 360sbc oxdrive 2.68 .... 80" 3 blade whispertip ex :florida:

SWAMPHUNTER45
Site Supporter - III
Site Supporter - III
Posts: 2901
Joined: Thu Nov 21, 2013 11:38 am
Location: Naturecoast, Florida

Re: new 383...what oil

Post by SWAMPHUNTER45 » Thu May 30, 2019 8:04 am

Mr. Branch is an Amsoil dealer as well and sends most of his new engines out with the special Z-Rod formula in them. The nice thing about Z-Rod is not only does it have the ideal level of zzpd to protect the cam and lifters but it also has a special quality to prevent rust when not in use.

They offer it in 10w-30 and 20w-50 last I checked.

Malcolmbolen23
Southern Airboat Member
Posts: 3
Joined: Sun Oct 06, 2019 8:42 pm

Re: new 383...what oil

Post by Malcolmbolen23 » Sun Oct 27, 2019 9:22 pm

I have a new skip white performance 406 stroker SBC based on Dart Block - its roller and they recommend VR1 20W-50 for this and all their SBCs. They also warranty (even in my airboat application) so I am going with their recommendation.

User avatar
Prototype
Southern Airboat Member
Posts: 786
Joined: Sat Jan 26, 2013 2:28 pm

Re: new 383...what oil

Post by Prototype » Sun Oct 27, 2019 9:54 pm

How did this post get so far? 23 hours on boat or engine or both and a debate is forumed becuase the op is wondering from unknown people what the builder recommends? This is a total cluster F""" to the engine builder and a simple call, regardless of second or third or fourth owner.
23 hours, so how many times can that engine or boat be sold?
Unless it's a ha ha dragon queen that touched 10k a few times?
Nope, Not on here in its worst day!

User avatar
digginfool
Site Supporter - III
Site Supporter - III
Posts: 2733
Joined: Wed Jun 05, 2013 3:00 pm
Location: South Florida

Re: new 383...what oil

Post by digginfool » Mon Oct 28, 2019 8:24 am

I second the Brad Penn. Has everything you're looking for. Personally, I run the 20w-50.
“When plunder becomes a way of life for a group of men living together in society, they create for themselves in the course of time a legal system that authorizes it and a moral code that glorifies it” - Bastiat

fl cracker
Site Supporter - II
Site Supporter - II
Posts: 4033
Joined: Thu Aug 20, 2009 9:15 pm
Location: Sorrento,FL

Re: new 383...what oil

Post by fl cracker » Sun Jan 19, 2020 8:10 pm

Amsoil dominator, look at the comparison vs Royle purple . Its a good read
" I have two guns...
One for each of you "

2017 Al David / stroked LS

User avatar
White Hawk
Southern Airboat Member
Posts: 36
Joined: Thu Jun 07, 2018 10:05 am

Re: new 383...what oil

Post by White Hawk » Mon Jan 27, 2020 10:40 am

Forget changes based on time. I run my 383 between 3400 and 5200 for hours at a time. Your motor will be in the upper RPM range when you ride. Change your oil and filter once it smells bad, and by then should look off. Change your oil and filter together, use racing oil as it has additives that will protect your motor in the higher rpm range, and it will not lose its protective properties when it is being run hard.
"The object of war is not to die for your country but to make the other bastard die for his." :florida:

Post Reply

Return to “Automotive Power Only”