High Mileage Vettes using additives?
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 5,203
Likes: 0
From: Las Vegas Nevada
High Mileage Vettes using additives?
Anyone out there with high mileage Vettes using any additives and if so what do you use and why?
I have used Engine Restore in past oil changes and I think it might help a bit. Any one else have any experiences with additives?
I have used Engine Restore in past oil changes and I think it might help a bit. Any one else have any experiences with additives?
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Re: High Mileage Vettes using additives? (Southern Comfort)
I drive my 87 every day and it has 187k. It doesn't burn oil, has good compression and I do not use any additives. If your engine is in such shape that you have to add high mileage additives, then you need to overhaul the engine! Additives take your money away from you that would be better spent on fixing the original problem. No additives can correct worn rings, oval cylinders, leaking head gaskets, excessive valve stem to guide clearance, worn out seals etc.
Safety Car
Joined: Sep 2003
Posts: 4,504
Likes: 0
From: Charleston SC
Re: High Mileage Vettes using additives? (jfb)
:iagree: A good full synthetic will have all the additives you need. If you add something else you will be messing up the good oil engineering you pay for with top quality oil. If you have some engine wear that results in oil loss move to a slightly heavier oil.
[Modified by rkessel, 5:00 PM 10/20/2003]
[Modified by rkessel, 5:00 PM 10/20/2003]
Le Mans Master
Joined: May 2003
Posts: 5,362
Likes: 3
From: Delray Beach FL
Re: High Mileage Vettes using additives? (rkessel)
I have 155,000 on my 93 LT1. It doesn't get any type of additives. Of course, the motor has been running synthetic oil since day 1. As for Restore, it is a great product. I used it in my 92 Mustang GT. That car had 134,000 miles on it. I used it just as a precaution. It didn't smoke, leak, etc. Ran like it had 30,000 miles on it.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: High Mileage Vettes using additives? (jfb)
I drive my 87 every day and it has 187k. It doesn't burn oil, has good compression and I do not use any additives. If your engine is in such shape that you have to add high mileage additives, then you need to overhaul the engine! Additives take your money away from you that would be better spent on fixing the original problem. No additives can correct worn rings, oval cylinders, leaking head gaskets, excessive valve stem to guide clearance, worn out seals etc.
RACE ON!!!
[Modified by CFI-EFI, 11:42 AM 10/20/2003]
Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Re: High Mileage Vettes using additives? (Southern Comfort)
ALRIGHT!! I'm going to stir this pot a bit.
A little MARVEL MYSTERY OIL in your fuel will help reduce valve stem/valve seat wear.
When used in the fuel it helps old rings seal just a little bit better, too..
Using it in the fuel is probably more beneficial than in the oil.
It's a pretty good engine detergent though.
A little in the oil will help keep the deposits out.
Particulary helpful in high mileage engines.
Good for low mileage engines to help them get to be high mileage engines in good condition.
Besides all that, IT'S LIKE ZAINO...... IT SMELLS GOOD!!!!!!
Anything that SMELLS that good, my Vettte has GOT to like. :) :)
Dayum, I need to buy stock in Marvel.......
BTW, I ain't checking back here to listen to the rigamarole THIS will stir up.
A little MARVEL MYSTERY OIL in your fuel will help reduce valve stem/valve seat wear.
When used in the fuel it helps old rings seal just a little bit better, too..
Using it in the fuel is probably more beneficial than in the oil.
It's a pretty good engine detergent though.
A little in the oil will help keep the deposits out.
Particulary helpful in high mileage engines.
Good for low mileage engines to help them get to be high mileage engines in good condition.
Besides all that, IT'S LIKE ZAINO...... IT SMELLS GOOD!!!!!!
Anything that SMELLS that good, my Vettte has GOT to like. :) :)
Dayum, I need to buy stock in Marvel.......
BTW, I ain't checking back here to listen to the rigamarole THIS will stir up.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Drifting
Joined: Jul 2003
Posts: 1,257
Likes: 4
From: Granite City Illinois
Re: High Mileage Vettes using additives? (VetNutJim)
My dad gave me some Marvel Mystery Oil many years ago when I was buying bulk oil at .15 cents a quart for my 1951 Chevy. The bulk oil was in glass jars with a steel screw on spout)--the filling station kept the jars. I didn't use the MMO.
Later when he worked for Ford he gave me a can of Rotunda oil additive; I didn't use that either.
My cars still smoke--the Corvette has 143,000 and needs valve guides.
They still sell Marvel Mystery Oil? Will it help me pass the emmissions test?
My hydrocarbons (GPM) are high at 2.42 I need a composite reading of 2.00 to pass.
Thanks for your help.. Marvel Mystery Oil.. Marvel Mystery Oil..
Later when he worked for Ford he gave me a can of Rotunda oil additive; I didn't use that either.
My cars still smoke--the Corvette has 143,000 and needs valve guides.
They still sell Marvel Mystery Oil? Will it help me pass the emmissions test?
My hydrocarbons (GPM) are high at 2.42 I need a composite reading of 2.00 to pass.
Thanks for your help.. Marvel Mystery Oil.. Marvel Mystery Oil..
Heel & Toe
Joined: May 2003
Posts: 21
Likes: 0
From: Enterprise AL
Re: High Mileage Vettes using additives? (Mark-44)
I'll treat this posting as a Poll and cast my vote for NO additives. I grew up watching my older brothers pour STP Oil Treatment in their "overraced and undermaintained" small blocks. In my opinion all it ever did was hide the "real" problem. Must admit it would it would make a noisy valvetrain run much quiter but I can only imagine what kind of sludge was building up under those valve covers. I am sure the new additives have come a long way but I still think regular oil/filter changes, using a good synthetic of course, are what really determine the life of an engine. Just my opinion of course.
