I'm removing the stuck pistons in my MGB calipers and replacing the seals. Bentley says to coat the new seals and the piston with Lockheed Brake Lubricant (not available locally). The parts store sold me CRC Brake Caliper Grease. I just noticed that it says "Do not use on internal piston parts. Use brake fluid". Am I safe to use this for the seals and pistons or not? It containsmolybdnum disulfide, graphite and teflon. Thanks