| Business | Phone |
| Advantage Discount Fuel Svc 803 S 1st St, Ronkonkoma 11779 | (631) 588-2500 |
| Danek Fuel 701 Koehler Ave # 3, Ronkonkoma 11779 | (631) 981-1217 |
| Discount Fuel Po Box 1571, Ronkonkoma 11779 | (631) 585-4373 |
| General Discount Oil Inc 6 Union Ave # B, Ronkonkoma 11779 | (631) 585-1244 |
| Precise Fuel Corp 2154 Pond Rd, Ronkonkoma 11779 | (631) 467-4447 |
| Safeguard Home Heating Inc 325 Portion Rd # A, Ronkonkoma 11779 | (631) 467-3048 |
| Slomins Inc 125 Lauman Ln, Ronkonkoma 11779 | (631) 467-8484 |
| Swiss Port Fueling Inc 90 Arrival Ave # 17, Ronkonkoma 11779 | (631) 467-2345 |
| Taylor Fuel Inc 354 Ronkonkoma Ave, Ronkonkoma 11779 | (631) 588-3923 |