What type of antifreeze is in it? The orange stuff will actually mix with oil and form a goop that will stick to the inside of everything. if you don't get rid of it, it will eat your bearings. I would change the gaskets, refill, run it to op temp and then use an oil flush product and change the oil again then change that oil out after about 3-500 miles. Might be overkill but oil is cheap and bearings are expensive. If it was mine I would do that no mater what type antifreeze it was but for sure with the orange stuff.
Good luck
Hope this helps
1996 Chvy 3500 CCDWLB 6.5 Heathed, NO vac, marine injctrs, ARB bumper, BIG pipe, 3" lift, bright lights, bypass oil system.
1986 Chvy 6.2 M1009 blazer RAM AIR, Headers, Custom interior
2001 Chinook RV, V10 gas
1974 John Deere 1530 diesel tractor
1993 John Deere 455 Diesel lawn mower
1967 GTO, 1989 Honda Transalp
2009 VW Jetta TDI, flashed and piped, 6speed, fun car!
1998 6.5 suburban, stock, daughter's
1993 6.5 3500 CCSWLB GM8, Heathed, big exhaust, gauges, Son's
1984 6.2 ATS turbo 3500, SCDWLB - Son's
3 kids, 1 wife, 1 dog
Gunsmith, Tactics Instructor, Fabricator USMC 87-93 Semper Fi!