diff --git a/docs/changelog.txt b/docs/changelog.txt
index 4ce61b51..eb98b08b 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -10,6 +10,7 @@
 - Added LMS Jubilee
 - Added Furness Railway Rectangular Tanker Wagon
 - Added Furness Railway 20-ton Hopper Wagon
+- Fixed some introduction and model lifespans (set is now fully freight playable from 1840 onwards)
 - Fixed some horizontal view lengths
 - Fixed depot sprite (vertical alignment and 32px sprite flag)
 - Fixed articulated tram capacities
diff --git a/src/trains/rollingstock/Mk5DVT.pnml b/src/trains/rollingstock/Mk5DVT.pnml
index c2ee9035..f36cf69e 100644
--- a/src/trains/rollingstock/Mk5DVT.pnml
+++ b/src/trains/rollingstock/Mk5DVT.pnml
@@ -4,6 +4,7 @@ item (FEAT_TRAINS, item_BRMk5DVT, 596) {
 		climates_available: 			ALL_CLIMATES;
 		refittable_cargo_classes:		CC_PASSENGERS;
 		introduction_date:				date(1989,1,1);
+		model_life:						VEHICLE_NEVER_EXPIRES;
 		cargo_allow_refit:				[PASS, TOUR];
 		loading_speed:					14;
 		cost_factor:					30;
diff --git a/src/trains/rollingstock/Mk5a.pnml b/src/trains/rollingstock/Mk5a.pnml
index 639b08a8..cc2c7aa8 100644
--- a/src/trains/rollingstock/Mk5a.pnml
+++ b/src/trains/rollingstock/Mk5a.pnml
@@ -8,6 +8,7 @@ item (FEAT_TRAINS, item_BRMk5a, 545) {
 		climates_available: 			ALL_CLIMATES;
 		refittable_cargo_classes:		CC_PASSENGERS;
 		introduction_date: 				date(2019, 08, 04);
+		model_life:						VEHICLE_NEVER_EXPIRES;
 		cargo_allow_refit:				[PASS, TOUR];
 		loading_speed:					14;
 		cost_factor:					52;
diff --git a/src/trains/rollingstock/RM_TPO.pnml b/src/trains/rollingstock/RM_TPO.pnml
index 01549414..7ff5a292 100644
--- a/src/trains/rollingstock/RM_TPO.pnml
+++ b/src/trains/rollingstock/RM_TPO.pnml
@@ -19,7 +19,7 @@ item (FEAT_TRAINS, item_RMTPO, 483) {
 		name: 							string(STR_NAME_RMTPO);
 		climates_available: 			ALL_CLIMATES;
 		introduction_date:				date(1963,4,21);
-		model_life:						100;
+		model_life:						VEHICLE_NEVER_EXPIRES;
 		refittable_cargo_classes: 		bitmask(CC_MAIL);
 		loading_speed:					10;
 		cost_factor:					49;