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DEAL Valvoline VR1 $4.79 Quart
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<blockquote data-quote="sh00ter" data-source="post: 3574287" data-attributes="member: 24531"><p>I believe the detergent pkg is much less in the racing oil. I'd think you would need to change it sooner in a street car if you used it? I know the Mobil-1 HM used to have higher levels of zinc than the std formula. Also, I recall Quaker state had a formula I used for a previous flat tappet vehicle called DEFY. not sure if they still make it or not, but if this is still the same, either of these should have an acceptable detergent pkg for a longer OC interval...but then again, if what you are doing is working, it's your decision. Just wanted to mention it.</p><p></p><p>EDIT:</p><p></p><p><a href="https://www.quakerstate.com/en_us/blog/new-green-bottle0.html" target="_blank">https://www.quakerstate.com/en_us/blog/new-green-bottle0.html</a></p><p></p><p><strong>"What happened to Quaker State Defy? My engine has 80,000 miles and I need high mileage motor oil.</strong></p><p></p><p>Quaker State Defy High Mileage motor oil is now called Quaker State High Mileage motor oil. Rest assured, the product is the same, just a shorter name!"</p></blockquote><p></p>
[QUOTE="sh00ter, post: 3574287, member: 24531"] I believe the detergent pkg is much less in the racing oil. I'd think you would need to change it sooner in a street car if you used it? I know the Mobil-1 HM used to have higher levels of zinc than the std formula. Also, I recall Quaker state had a formula I used for a previous flat tappet vehicle called DEFY. not sure if they still make it or not, but if this is still the same, either of these should have an acceptable detergent pkg for a longer OC interval...but then again, if what you are doing is working, it's your decision. Just wanted to mention it. EDIT: [URL]https://www.quakerstate.com/en_us/blog/new-green-bottle0.html[/URL] [B]"What happened to Quaker State Defy? My engine has 80,000 miles and I need high mileage motor oil.[/B] Quaker State Defy High Mileage motor oil is now called Quaker State High Mileage motor oil. Rest assured, the product is the same, just a shorter name!" [/QUOTE]
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