100%
STP Engine Flush 15oz
by STP— Made in Multiple US facilities
Verified American Made
Confidence
80%
- Made in: Multiple US facilities
- Source: Brand website, Product listing, Multiple USA facilities
Pre-oil-change engine flush from STP, Chicago, Illinois. Dissolves sludge and varnish deposits before a fresh oil change. Add to old oil, idle for 5 minutes, then drain and refill. Made in USA since 1954.
