September 24, 2007The 04' Silverado 5.3 I have is ready for an oil change. I recently got it and it has 50,000 miles on it. I plan to swap all fluids to Royal Purple. I know what to get as far as engine oil, but what about transmission, front and rear diffs and transfer case? I guess I need to locate a factory service manual also for fluid capacities...
Forums : Silverado (c/k) (1999 - 2006) : Fluid Capacities (169 Views)
September 24, 2007ill look in my manual tommorow, and let you know what it says...i dont know what it will say but im curious myself
September 25, 2007Oil- 6 quarts royal purple 5w-30
Tranny (drain & fill) = 5-6 quarts of royal purple MAX ATF
Rear Diff = 3 quarts 75w-90 full synthetic royal purple gear oil (i always buy a quart extra to have one around... so id get 4- although im pretty sure 2.5 will fill it)
Front Diff = 3 quarts cheap/regular 80w-90 gear oil (needs ~2.2 quarts)
** you do not put synthetic in the front for 2 reasons
1) its not necessary. the ring&pinion do not spin unless you are in 4wd
2) the case is sealed with RTV type gasket. Synthetic fluids break down RTV and can lead to leaks.
I put a mag-hytec trans pan on to increase capacity, add a temp sensor port and so i can do a drain/fill. You'll need about 16 quarts of tranny fluid if you bring it to a shop and ask them to do a flush. I just did 2 drain and fills on mine; the 2nd drain/fill 2 weeks after the first.
September 25, 2007I would prefer to get the trans flushed, so I will get 5 gallons of ATF fluid. Should I have the trans filter changed while i'm doing this?
September 25, 2007When I had mine done on the 03 I had, I brought them 16 quarts for the flush and had them install a new filter. They said it wasn't necessary, but It did make me feel better.
For a few bucks, I felt it was worth changing the filter. I'll be having it done again on the new truck when I get a few miles. It was worth every penny. Lower transmission temps, smoother still firm shifts, and better fuel mileage.
September 25, 2007when I first saw this post listed I thought it said "Flux Capacitor"
September 25, 2007No....I don't need any info on Flux Capacitors....I actually sell them on Ebay...