What is the difference between synthetic oil, synthetic blend and conventional oil?? I just had my oil changed and the Quick Lube guy said I needed a synthetic blend. I have a 2003 Lexus 300 ES with about 110,000 miles with average driving habits, nothing unusual.
My owner's manual says to use "API Grade SL "Energy-conserving" or ILSAC multigrade engine oil. Viscosity is SAE 5W-30. It doesn't say anything about a synthetic or synthetic blend. Is synthetic a part of the API Grade or is this different? Do I need a synthetic blend or is conventional o.k.? Thanks!
My owner's manual says to use "API Grade SL "Energy-conserving" or ILSAC multigrade engine oil. Viscosity is SAE 5W-30. It doesn't say anything about a synthetic or synthetic blend. Is synthetic a part of the API Grade or is this different? Do I need a synthetic blend or is conventional o.k.? Thanks!