Below you’ll find five easy tips for switching to Amsoil. Before you read how easy it is, let’s dispel some common myths about switching from petroleum-based oils to a synthetic product like Amsoil.
Once I switch, I can’t go back.
There is absolutely no truth to the rumor that once you switch to Amsoil (or any other synthetic oil for that matter), you can’t switch back to petroleum oil. Enough said.
Synthetic oil will cause my engine to leak.
Some leakage can occur if Amsoil comes in contact with sludge and cleaned it out, it might appear to “leak”, but eventually that will stop once our seal swelling agent takes effect.
I can’t mix Amsoil with other oils.
It is perfectly safe to mix Amsoil with another lubricant (synthetic or petroleum). The only disadvantage is that you will shorten the intended drain interval of your Amsoil product, but it will not cause any harm to your engine.
Will switching to Amsoil void my new car warranty?
This is simply not true. In order for your warranty to be voided it must be done in writing stating the reason why. To date this has never happened to anyone that has switched their vehicle over to Amsoil.
If I ignore the manufacturer’s recommendation for a 3,000-5,000 mile oil change interval, my warranty will be voided.
This is the number one question we answer concerning our 25,000-mile or 1-year oil change interval products. Amsoil has been producing synthetic motor oil since 1972 with 25,000-mile intervals and these intervals have been accepted by every manufacturer. Amsoil now produces a wide range of synthetic motor oils that meet every manufacturer’s recommendation and also our XL line of motor oils designed for 10,000-mile intervals in case you are not quite ready to make the jump to 25,000-miles.
HOW TO SWITCH TO AMSOIL
- Look up your vehicles information by using our Look-Up Guide. You will find the proper recommendations and quantities of all the listed lubricants.
- We highly recommend using Amsoil’s Engine Flush on your initial change to help speed up the process of removing sludge and varnish. Once Amsoil has been installed it will continue the cleaning process.
- Make sure you order an Amsoil EaO-Oil Filter to gain the maximum advantage of Amsoil’s 25,000-mile interval. These filters were specifically designed to last the entire 25,000-mile or 1-year drain interval.
- It’s a good idea to run a bottle of Amsoil’s Performance Improver through your fuel tank. This should be done every 4,000 miles to insure a properly maintained fuel system from tank to fuel injector’s.
- For diesel owners you will need one bottle of Engine Flush for every 5 quarts of oil in your sump. Diesel owners should also consider Amsoil’s Diesel Concentrate, which will compensate for the ULSD diesel fuels lack of lubricity that lubricate your injector’s and pumps and deliver incresed fuel mileage.
Keep a close eye on your oil level especially during the first 6 months when Amsoil is agressively cleaning your engine. If you see a slight consumption during this period don’t be alarmed this is typical on your first use with Amsoil.
Experiences over the last 13 years has shown that in higher mileage vehicle’s it is appropriate to cut your first drain interval in half to about 10,000-12,000 miles to help accelerate the cleaning process. This is merely a personal preference as we see the best results with this method, however every vehicle is different.
It’s also a good idea to start out with a clean air filter as a dirty air filter will speed up oil consumption. Amsoil EaA-Air Filter’s only need replacing once every 100,000 miles or 4 years. Our specially designed filter can be cleaned with regular shop air or vacumm. Learn more about Amsoil EaA-Airfilters.

