![Costco] Kirkland Signature 0W20, 5W20, 5W30 Full Synthetic Motor Oil, 2-pack $10 off - RedFlagDeals.com Forums Costco] Kirkland Signature 0W20, 5W20, 5W30 Full Synthetic Motor Oil, 2-pack $10 off - RedFlagDeals.com Forums](https://b.dam-img.rfdcontent.com/cms/009/868/021/9868021_original.jpg)
Costco] Kirkland Signature 0W20, 5W20, 5W30 Full Synthetic Motor Oil, 2-pack $10 off - RedFlagDeals.com Forums
Costco / Kirkland full synthetic oil is not certified for use in any Ford | Page 5 | MaverickTruckClub - 2022+ Ford Maverick Pickup Forum, News, Owners, Discussions
![Anybody running the Kirkland Signature Full Synthetic 5W-30 Engine Oil? Thinking about using this in my 2011 STI. Hard to beat the price and it's got all the API and dexOS certifications. Anybody running the Kirkland Signature Full Synthetic 5W-30 Engine Oil? Thinking about using this in my 2011 STI. Hard to beat the price and it's got all the API and dexOS certifications.](https://i.redd.it/2yypd88wnug81.jpg)