CAMDENN Well-known member Joined Sep 12, 2023 Messages 2,271 Reaction score 1,786 Location GA Current Ride #2 2023 5.0 TREMOR Avalanche 402A High Package Yesterday at 9:42 AM #21 TheWaterman said: I use 89. I've heard that 87 is the reason they had a lot of oil consumption issues with the older 5.0L's. Could just be a rumor. That's the reason I use 89. I see no reason to go 91-93. Click to expand... …Definitely a rumor.
TheWaterman said: I use 89. I've heard that 87 is the reason they had a lot of oil consumption issues with the older 5.0L's. Could just be a rumor. That's the reason I use 89. I see no reason to go 91-93. Click to expand... …Definitely a rumor.
…Definitely a rumor.
