| FAQs & Common Questions Is this oil really used in all Joe Gibbs race cars on race day?
Yes. Joe Gibbs Racing uses MicroZol XP1 for all of its race cars, including Nextel Cup, Busch, and Late
Model racing. What is the oil's viscosity?
MicroZol XP1 viscosity typically tests as a SAE 5W-20 oil. What type of racing engines can MicroZol XP1 be used in?
MicroZol XP1 was developed to give maximum performance in JGR Nextel Cup engines, but it can be used
in all high performance gasoline race engines, such as, ASA, Late Model, Drag, etc. Can this oil be mixed with other racing oils?
MicroZol XP1 should be compatible with most conventional race and street legal engine oils. However, Joe
Gibbs Performance recommends you do not mix this oil in order to maintain maximum performance. Is this a synthetic oil?
Yes. MicroZol XP1 is made with only premium synthetic base oils. The American Petroleum Institute (API)
would classify the base oils used in MicroZol XP1 as Group IV and Group V synthetic base oils. What type of horsepower improvement can I expect when using MicroZol XP1?
Horsepower improvements will vary by engine type and application. In Joe Gibbs Racing Nextel Cup
engines horsepower gains of 2 hp over other premium synthetic race oils are typical. See MicroZol XP1
technical data sheet for some actual dynamometer results. Is this really the best performing race oil Joe Gibbs Racing has used?
Yes. Joe Gibbs Racing has spent significant resources and completed numerous dynamometer tests
developing racing oils specifically for their engines over the last 5 years. MicroZol XP1 has always given
the best overall performance. Does MicroZol XP1 contain chlorinated additive?
MicroZol XP1's composition is proprietary and exclusive to Joe Gibbs Performance, but it does not contain
any chlorinated additives. Should I flush my engine before using MicroZol XP1?
Flushing your engine is not necessary before using MicroZol XP1. You should drain your engine thoroughly
and change the oil filter prior to using MicroZol XP1. This will guarantee you receive the maximum benefit
from using MicroZol XP1. Can I use MicroZol XP1 in my street car?
No. MicroZol XP1 was specifically developed for use in gasoline powered racing engines. Joe Gibbs
Performance does not recommend its use in any other applications. How often should I change MicroZol XP1 in my race engine?
How often you change your oil depends upon the application. Joe Gibbs Performance recommends you
maintain the same oil change interval for MicroZol XP1 that you are currently using. Can MicroZol XP1 be used as a break-in oil?
MicroZol XP1 was not developed for use as a break-in oil. Joe Gibbs Performance Break-In oil was
developed for Joe Gibbs Racing for that purpose, so we recommend using Joe Gibbs Performance Break-In oil to break in your engine, and then use Joe Gibbs Performance Racing Oil for racing. What is ZolTech?
ZolTech was the test market name for our racing oil. We have formalized the final name for this product, and it is sold under the MicroZol label. | 
