Drive with Peace of Mind Costco Engine Oil for Unwavering Reliability

Costco is the primary retailer of Kirkland Signature Synthetic Motor Oil, but it's not the manufacturer. Instead, the chain gets its products from Warren Oil. Kirkland Signature Full Synthetic 5W-30 Motor Oil is formulated to reduce wear on critical parts and maximizes fuel economy. So I'm debating what I should use, what do you think? Mobil 1 Motor Oil SuperSyn 5W-30 ($2.5 @costco) Mobil 1 Motor Oil SuperSyn 10W-30 ($2.5 @ ... Anybody who does their own oil changes use the Costco heavy diesel oil ... FYI - motor oils are heavily regulated by the feds so look at the ... Cheaper oil begs the question “Is my car engine getting the additives it needs to ensure long-lasting performance when buying a less expensive motor oil?” Costco engine oil (2009 facelift, 3.6 TDV8). Hi all, As is usual, I'll be servicing my new (to me) L322 twice a year and I'm looking around ... As long as the 15W40 oil has the API service class your engine requires, it's fine. Check your chassis owner manual for oil viscocity & API ... HPSimpson TDR MEMBER. There was a test on Costco motor oil on Project Farm on You Tube check it out ... I, too, have been using Kirkland in the Mrs.' 2.4 Ecotec (Verano.) No complaints. That car gets 5000 km OCIs because by then, I'm topping it up ... 1852 likes, 64 comments - costco on April 28, 2023: "Help reduce engine wear and maximize fuel economy with Kirkland Signature™ Motor Oil.