Car Information:
Honda Civic
Year: 2005
Engine Size: 1.4L
Trans: Automatic

Issue / Question:

I use Mobil 1 full synthetic and a Fram Tough Guard filter. I drive mostly highway miles, with some city. I do not over-stress my engine, which has about 115,000 miles. I change my filter and oil every 10K miles.

Today, I was listening to your show and I want to know what advantage Amsoil has over Mobil 1 fully synthetic.

Answer:
Don’t get me wrong, if they didn’t make Amsoil I to would most likely use Mobil 1, Mobil is made from group 3 PAO base stocks. Amsoil Group 5 so Amsoil is a more durable oil. The most important aspect is Amsoil uses ESTERS in their PAO base which Mobil does not. Without Esters added to PAO oils seals degradation occurs, both oils are great at reducing or eliminating friction and wear but most Mobil engines are candidates for oil seal replacements after 100K. Because the seals get hard and allow oil to start leaking.
Good luck hope this helps
Larry

For professional auto repair and services in Orlando you can call our shop today at 407-629-2661.

Magic Mechanic
1432 Lee Road OrlandoFL32804 USA 
 • (407) 298-7447