Top 10 Best Oil Additive For Older Engines Based On User Rating

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Are you looking for Oil Additive For Older Engines Reviews? Our experts found 49747 number of feedback online for "Oil Additive For Older Engines" and shortlisted them. This suggestions is created for those looking for their ideal Oil Additive For Older Engines. On selected products for the Best Oil Additive For Older Engines you will see ratings. The rating matrix we have generated is based on user ratings found online. Take a look -

Best Oil Additive For Older Engines
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NoProductScoreAction
1Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz9.8Check it on Amazon
2ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles9Check it on Amazon
3Lucas Oil 10278 Engine Oil Stop Leak9Check it on Amazon
4Restore (00016 8-Cylinder Formula Engine Restorer & Lubricant - 16 oz8.8Check it on Amazon
5Lucas Oil 10063 Engine Break in Oil Additive - TB Zinc Plus8.6Check it on Amazon
6REV X ZDDP Oil Additive - Zinc & Phosphorus (5 Pack)8.6Check it on Amazon
7Prolong Super Lubricants PSL11000 Engine Treatment - 12 oz8.6Check it on Amazon
8Valvoline VR1 Racing SAE 20W-50 High Performance High Zinc Motor Oil 5 QT8.4Check it on Amazon
9ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 1 Bottle8.2Check it on Amazon
10BestLine Racing Engine Oil Treatment (12 ounce)8.2Check it on Amazon

Comparison Chart for Best Oil Additive For Older Engines

49747 reviews were considered when writing our recommendations for the Oil Additive For Older Engines in this article.

Table Of Content:

1. Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment – 11 oz

  • Prevents camshaft wear
  • Reduces piston scuffing
  • Increases engine life
  • Makes newer oils work in older engines
  • Boosts Zinc and Phosphorous Levels

2. ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles

  • PROTECT YOUR ENGINE – Older cars with flat tapped lifters-cam need the added zinc for protection
  • EASY TO USE – Simply empty entire 4oz contents of the bottle to a 4 to 6 quart oil change.
  • PREVENT METAL ON METAL CONTACT – ZDDPlus alters characteristics to prevent metal on metal contact
  • FOR USE ON PRE 1989 AND HIGH PERFORMANCE ENGINES
  • COMPATIBLE WITH SYNTHETIC AND CONVENTIONAL MOTOR OILS

3. Lucas Oil 10278 Engine Oil Stop Leak

  • Compatible with petroleum, semi-synthetic and full synthetic motor oils
  • Renews worn seals with no risk of damage or eventual corrosion
  • Reduces engine noise and oil consumption, while raising oil pressure
  • Contains no harmful solvents

4. Restore (00016 8-Cylinder Formula Engine Restorer & Lubricant – 16 oz

  • Restores cylinder compression
  • Restores horsepower
  • Restores engine performance
  • Reduces oil consumption

5. Lucas Oil 10063 Engine Break in Oil Additive – TB Zinc Plus

  • Affordable Solutions
  • Not designed for passenger car use
  • Exclusive blend of extreme pressure additives
  • Excellent for flat tappet camshafts or as an additive

6. REV X ZDDP Oil Additive – Zinc & Phosphorus (5 Pack)

  • Creates an anti-wear layer at friction points to prevent metal-to-metal contact and eliminate wear.
  • Engine break-in where the new camshaft and lifters need extra protection, and ZDDP is perfect for that.
  • Mandatory for all flat tappet engines.
  • Works in both synthetic and standard mineral-based oils.
  • Two fluid ounces mixed with 6 quarts of oil create a ratio of 3000 – 3200 parts per million (ppm).

7. Prolong Super Lubricants PSL11000 Engine Treatment – 12 oz

  • Includes a Formula with Anti-Friction Metal Treatment Technology
  • Features Engineering Designed to Treat Metal Surfaces of Both Gasoline and Diesel Fueled Engines
  • Offers Molecules that Interact with Metal Surfaces and Chemically Bond to Create a Protective Layer that Reduces Damaging Friction and Heat.
  • Offers to Protect the Engine Even when the Motor Oil is Not Yet Fully Circulating
  • Features a Formula Containing No Solid Particles Such as PTFE Resins, ‘Molys’, Zinc, Copper, or Graphite.

8. Valvoline VR1 Racing SAE 20W-50 High Performance High Zinc Motor Oil 5 QT

  • Selling Racing Motor Oil
  • Specifically formulated for race-level protection in all classic and modern high-performance vehicles, including flat-tappet and performance cam engines.
  • High zinc and phosphorus formula for extreme anti-wear protection
  • Formulated to maximize horsepower

9. ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 1 Bottle

  • Prevents premature cam and valve train failure
  • Extreme pressure protection
  • For use on pre-1989 engines
  • Use in high-performance and classic cars

10. BestLine Racing Engine Oil Treatment (12 ounce)

How To Choose The Best Oil Additive For Older Engines

Does the thought of finding a great Oil Additive For Older Engines stress you out? Has your mind been juggling between choices when it comes to buying Oil Additive For Older Engines in general, specifically regarding which model to choose?
If that’s the case, know that you’re not alone. Many people find it tough to buy the perfect Oil Additive For Older Engines for themselves. We understand the stress associated with the buying process!

Since you’re here, you are obviously curious about Oil Additive For Older Engines. You’ve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs.

There are many sources that’ll provide you with that information- buying guides or ratings websites, word-of-mouth testimonials from friends or family members, online forums where users share their personal experiences, product reviews specifically found all over the internet and YouTube channels. Only thorough research will ensure that you get the right product.

But that’s not always easy, right? That's why we've taken time to compile a list of the best Oil Additive For Older Engines in today's market, on your behalf, so that there will be no more worries for you.

How did we come up with the list, you ask? How did we create this buying guide?

  • First, our algorithms collected as much information available about these products from trusted sources.
  • We employed both Artificial Intelligence and large data volume to validate all collected information.
  • Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Oil Additive For Older Engines currently on the market!
The products aren’t chosen randomly. We consider several criteria before assembling a list. Some of the criteria are discussed below-

  1. Brand Value: What happens when you go for a not-so-reputable brand just because the price seems cheap? Well, the chance of getting a short-lasting product goes higher. That’s because the renowned brands have a reputation to maintain, others don’t.


Top Oil Additive For Older Engines brands try to offer some unique features that make them stand out in the crowd. Thus hopefully, you’ll find one ideal product or another in our list.

  1. Features: You don’t need heaps of features, but useful ones. We look at the features that matter and choose the top Oil Additive For Older Engines based on that.
  2. Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products of higher specifications, but with the right balance.
  3. Customer Ratings: The hundreds of customers using the Oil Additive For Older Engines before you won’t say wrong, would they? Better ratings mean better service experienced by a good number of people.
  4. Customer Reviews: Like ratings, customer reviews give you actual and trustworthy information, coming from real-world consumers about the Oil Additive For Older Engines they used.
  5. Seller Rank: Now, this is interesting! You don’t just need a good Oil Additive For Older Engines, you need a product that is trendy and growing in sales. It serves two objectives. Firstly, the growing number of users indicates the product is good. Secondly, the manufacturers will hopefully provide better quality and after-sales service because of that growing number.
  6. Value For The Money: They say you get what you pay for. Cheap isn’t always good. But that doesn’t mean splashing tons of money on a flashy but underserving product is good either. We try to measure how much value for the money you can get from your Oil Additive For Older Engines before putting them on the list.
  7. Durability: Durability and reliability go hand to hand. A robust and durable Oil Additive For Older Engines will serve you for months and years to come.
  8. Availability: Products come and go, new products take the place of the old ones. Probably some new features were added, some necessary modifications were done. What’s the point of using a supposedly good Oil Additive For Older Engines if that’s no longer continued by the manufacturer? We try to feature products that are up-to-date and sold by at least one reliable seller, if not several.
  9. Negative Ratings: Yes, we take that into consideration too! When we pick the top rated Oil Additive For Older Engines on the market, the products that got mostly negative ratings get filtered and discarded.
These are the criteria we have chosen our Oil Additive For Older Engines on. Does our process stop there? Heck, no! The most important thing that you should know about us is, we're always updating our website to provide timely and relevant information.

Since reader satisfaction is our utmost priority, we have a final layer of filtration. And that is you, the reader! If you find any Oil Additive For Older Engines featured here Incorrect, irrelevant, not up to the mark, or simply outdated, please let us know. Your feedback is always welcome and we’ll try to promptly correct our list as per your reasonable suggestion.

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