Xuhal Dual Chamber Head Gasket Tester Kit, 8.5oz Testing Fluid Combustion Leak Test Kit for Gas Diesel Engine Car Truck Color Change Indicator

If you want to verify the head gasket, they make a tool called block test kit for 20-30 bucks. You hook it up to your radiator and suck the air in it. If exhaust gases are escaping into your cooling system then it changes the liquid from blue to yellow. I got a feeling you likely are. Here is one of the block testers, they are all pretty much the same. Lots of videos online showing how to use them. https://www.amazon.com/Xuhal-Chamber-Testing-Combustion-Indicator/dp/B0GS5DJCLW/ref=sr_1_4_sspa?dib=eyJ2IjoiMSJ9.1SS7r-3wwU3Nafy7CtM28OqAxm5hCEXN_ocF-h83KtLSwfI_I4OcZPpvcnWb1Nf21pUXJTsv9CCiIa5NJP4d-_YhhmbuTZ_UIMScx23dhEAeFL2qCd0NQt65jXtNFOdnGwx5tB5LvYgN3xO36jPhPEKK2Uz0Bwl74mNDi_CnOXwdImVzfx0luoCIhcJeaiOOFddRQF0SxCYVywR_eTfBsKdXbJRinAwhTaCj2TbUm8E7XogSeqRGQ8EGb1Bh6GNuFKDhE6khX8W7KFQD5ohFSphHNkI80eIOgCugj8uAjCE.ue7L-N_XJCxoO1WvVSr2voiwhG4Sy2B-KOQkDKSh86E&dib_tag=se&keywords=block+tester+kit&qid=1780930164&sr=8-4-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1