Real-time Precise Point Positioning (RT-PPP) is a technique that improves positioning accuracy by correcting common mode errors present in GNSS observables by means of products made available in real-time by specialized agencies, such as the International GNSS Service (IGS) and the Faculty of Astronomical and Geophysical Sciences (FCAG) of the Argentine University of La Plata (UNLP). The Real-Time Service (RTS) of IGS provides various correction streams for RT-PPP deployment, whose availability is beyond 95% for the Global Positioning System (GPS) and 90% for the GLObal NAvigation Satellite System (GLONASS). During the epochs the correction streams becomes momentarily unavailable or, when communication problems/latency occur, the equipment user has no other option than to use outdated products, which may degrade position accuracy. The objective of this work is to evaluate the impact of using outdated RT-PPP products on GPS positioning accuracy in Brazilian territory. As main contribution, we show that the RT-PPP GPS positioning accuracy is not significantly degraded when outdated products up to 25 minutes are used, being able to comply with the Society of Automotive Engineers (SAE) J2945 specification, which stipulates a maximum horizontal position error of 1.5 meter, at 68% of probability, aiming at Connected Autonomous Vehicle (CAV) applications. Results from experimental tests are conducted, in a stationary environment, which validates the outline verifications.