Recent content by SierraMan

OK Guys, thank you for all your insight and suggestions regarding my problem. Just to clarify, I did have the oil pressure sensor replaced last fall. The mechanic that did the work told me that the screen was in good condition (no signs of contaminants on the screen). I used the 5W20 oil because...

Hey Guys … I have survived the cold winter (-10 to +15 deg F) and nursed my old Sierra (150,000 miles) through the worst of it. I did change the oil last fall to Castrol Syntec 5w20 full synthetic. However, as the temperatures dropped, I began to have difficulty in keeping the oil pressure up...

OK guys, thanks for your thoughts on my question, I think I will go with the 5W30 high mileage conventional oil and use the block heater on cold days No leaks yet (touch wood) and I would like to keep it that way.

Looking for advice on which oil to use in my 2005 GMC Sierra 1500 with the 5.3 litre V8. I bought the truck 2 months ago with 140,000 miles (223,000 KM) and now need to change the engine oil. I assume that the truck was run on conventional oil by the previous owner. As I live in Edmonton Alberta...