1998 Chevrolet Silverado Additive Use

GMC
Avatar
YBCOOL34
  • MEMBER
  • 1 POST
[/b] :D Hi! I wanted to ask - Would it be okay to use Marvel Mystery Oil along with 5W-30 Mobil 1 Extended Performance Oil (Fully Synthetic) in my Dad's '98 Silverado without causing any harm?
Apr 13, 2006 at 6:22 AM
Advertisement
Avatar
LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
Marvel Mystery Oil was used in the day of leaded fuel and carburators to help remove soem of the generated contaminents. I see no reason because of modern electronics, fuels and oils. It won't hurt but is a waste of money.
Apr 13, 2006 at 10:59 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.

Suggested Repair

Do not add Marvel Mystery Oil to the Mobil 1 5W-30 synthetic oil. It should not harm the engine, but it is unnecessary with modern fuels and oils and is a waste of money.

Conversation Summary

The owner asked whether Marvel Mystery Oil could be used with Mobil 1 5W-30 fully synthetic oil in a 1998 Silverado. The expert said the additive was useful in the leaded-fuel and carburetor era but is unnecessary with modern electronics, fuels, and oils; it will not hurt the engine but wastes money.

Related Repair Questions

Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle