Go Back  Offshoreonly.com > Technical > General Q & A
best oil to use >

best oil to use

Like Tree10Likes

best oil to use

Old 06-24-2019, 11:43 AM
Thread Starter
Join Date: May 2019
Location: Florida
Posts: 29
Default best oil to use

I know this thread has probably been hashed out multiple times.
509 Mag MPI with a vortec.

I currently am running the mobile 1 15w50. Is this just fine or should I be using something like VR1 racing oil with more ZDDP?
Also thoughts on straight 50 weight for summer in florida.

es99eliminator is offline  
Old 06-24-2019, 11:57 AM
Join Date: Jun 2010
Posts: 3,612

We run 15-50 Mobile 1 as do many others.

You will hear a ton a ton of opinions, brad pen, valvoline racing oil, royal purple, rotella, etc...
1MOSES1 is offline  
Old 06-24-2019, 12:28 PM
iTrader: (1)
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 10,058

Oil of choice here at OSO is:
Mobil 1 15-W50
Valvoline VR1 20W50

So, you have that going for you and really no fights over oil here in say last 5-8yrs or more ?
Griff and TomZ like this.

Last edited by SB; 06-24-2019 at 03:05 PM.
SB is offline  
Old 06-24-2019, 12:48 PM
Offshoreonly Advertiser
Offshoreonly Advertiser
iTrader: (2)
DiamondPerformance's Avatar
Join Date: Oct 2002
Location: De.
Posts: 1,270

Amsoil Racing 15w-50 is also a good choice.
[email protected]

The Best Parts & Service At The Best Price
DiamondPerformance is offline  
Old 06-24-2019, 01:56 PM
iTrader: (1)
Join Date: Oct 2013
Location: SF Bay Area
Posts: 2,587

I heard that Brad Penn was bought out and not as good anymore. Summit doesn’t sell it any longer.

The general consensus over the years seems to be changing it often is more important than any specific brand itself.
Baja Rooster is offline  
Old 06-24-2019, 02:06 PM
Thread Starter
Join Date: May 2019
Location: Florida
Posts: 29

thanks for the replies...seems i'm already using good oil.

Diamond performance-I was curious about amsoil. I run there marine gear lube in my bravo.

es99eliminator is offline  
Old 06-24-2019, 02:11 PM
Platinum Member
Platinum Member
Knot 4 Me's Avatar
Join Date: Jun 2005
Location: Central IL, LOTO
Posts: 7,405

I run straight Slick 50 with a ZMax/Lucas oil treatment stack. Top off with some Motor Honey as needed.

I know a guy that was running 5W30 in his warmed over 500 EFI's because "that's what the builder told me to run". You can't make this stuff up. And no, the builder didn't tell him to run 5W30. He couldn't find 20W50 on the shelf of the brand he was told to use so he just went with 5W30.
Knot 4 Me is offline  
Old 06-24-2019, 02:31 PM
Join Date: Feb 2013
Location: Austin, Texas
Posts: 607

I've been running straight HD 40W in Texas for years with no issues. Seems to help keep oil press up when oil gets hot (i.e. 220+ degs)
As for the brand to use, everyone has their own opinion. I personally have never seen an eng fail solely due to wrong brand of oil. IMHO, once past break-in, just pick your favorite flavor and stick with it.
14 apache likes this.
zz28zz is offline  
Old 06-24-2019, 02:49 PM
Platinum Member
madbouyz's Avatar
Join Date: Nov 2002
Location: PortRoyal Bermuda
Posts: 735

IMO the most important thing to get right first is the correct grade (weight) for the climate you operate in. As an example it pi**es me off no end to see that the dealer/service shop for my pop's car uses 5-30w coz they buy it cheapo in 100 gallon drums when the owners manual clearly calls for 20-50w in my climate .
madbouyz is offline  
Old 06-24-2019, 03:30 PM
VIP Member
VIP Member
Sunny32SSR's Avatar
Join Date: Dec 2009
Location: Florence, Kentucky
Posts: 677

Amsoil Dominator and Wix filters. Amsoil severe gear lube for the drives.
Sunny32SSR is offline  

OSO Sponsor
OSO Advertiser
OSO Advertiser

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.

OSO Advertiser