* Engine Variations: There were several variations of the 350 engine used in 1998 Silverados. The exact oil capacity can differ slightly depending on the specific engine configuration.
* Oil Filter: The type of oil filter used can also affect the total oil capacity.
* Leaks: If your engine has any leaks, it will affect the total amount of oil required.
Here's how to find the correct amount:
1. Consult your owner's manual: This is the most reliable source for the oil capacity.
2. Look for a sticker: Check the engine compartment, the driver's side door jamb, or under the hood for a sticker that states the oil capacity.
3. Contact your local mechanic: A mechanic who specializes in your make and model will be able to tell you the exact amount.
Important Note: Always double-check the oil level after adding oil. It's better to err on the side of underfilling than overfilling. Overfilling can cause serious engine damage.