Prices subject to change without notice. *Added value, no charge. **Plus environmental fee/shop supply fee. State and local taxes are not included. $35.00 additional charge for standard CAT brand filters. $45.00 additional charge for high efficiency CAT brand filters. Prices subject to change without notice. Please note additional charges may be applied for some engine types and name-brand filter applications. Petro Stopping Centers no longer performs manual adjustments on Automatic Slack Adjusters.