{"product_id":"penngrade-1-high-performance-engine-oil-sae-50-1-qt-heavy-duty-straight-weight-27-7115-6","title":"PennGrade 1 Engine Oil | Air-Cooled VW \u0026 Porsche | SAE 50 Heavy-Duty Straight-Weight (27-7115-6)","description":"\u003ch2\u003e\u003cb\u003ePennGrade 1 High-Performance Engine Oil — SAE 50 Heavy-Duty Straight-Weight, High-Zinc (1 qt)\u003c\/b\u003e\u003c\/h2\u003e\u003cp\u003eA \u003cb\u003esynthetic-blend, high-zinc\u003c\/b\u003e engine oil engineered for air-cooled, classic, and flat-tappet engines. Outstanding film strength under thermal stress, strong anti-wear protection, and shock-load capability that modern low-zinc oils simply cannot match.\u003c\/p\u003e\u003cp\u003eStraight-weight \u003cb\u003eSAE 50\u003c\/b\u003e — the heaviest weight in the PennGrade 1 lineup. Used in hot climates, sustained high-load operation, and built engines with deliberately loose bearing clearances. Not recommended for cold-start operation below ~70°F.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eVehicle Fitment\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eAir-Cooled VW:\u003c\/b\u003e Type 1, Type 2, Type 3, Type 4 engines (stock and built)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePorsche:\u003c\/b\u003e 356, 911, 912, 914 (consult manual for grade selection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlat-tappet engines:\u003c\/b\u003e any engine requiring elevated zinc\/phosphorus anti-wear additives, and vintage engines built to pre-emissions API specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cb\u003eWhy Choose PennGrade 1?\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003ePennGrade 1 is the modern brand name for the legendary \"Brad Penn\" green oil — refined in Pennsylvania from paraffinic crude, with a high-zinc additive package (ZDDP) that has long made it the favorite of vintage, air-cooled, and flat-tappet engine builders. Made in the USA.\u003c\/p\u003e\u003ch3\u003e\u003cb\u003eKey Features \u0026amp; Benefits\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eHigh ZDDP anti-wear:\u003c\/b\u003e maintains the elevated zinc\/phosphorus barrier flat-tappet cams and rockers depend on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHeaviest straight weight:\u003c\/b\u003e SAE 50 for hot climates, sustained high load, and built engines with loose bearing clearances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStrong film strength:\u003c\/b\u003e holds up under thermal stress and shock loads better than modern low-zinc oils.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eEMPI Part #:\u003c\/b\u003e 27-7115-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGrade:\u003c\/b\u003e SAE 50 (straight weight)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVolume:\u003c\/b\u003e 1 quart bottle, sold individually (case of 12)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUPC:\u003c\/b\u003e 707924007244\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCountry of Origin:\u003c\/b\u003e USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eWhy does an air-cooled VW need high-zinc oil?\u003c\/b\u003e Air-cooled VW engines have no catalytic converters but do use flat-tappet camshafts and rocker geometry that depend on a high zinc\/phosphorus (ZDDP) barrier layer. Modern low-zinc API SP\/SN oils can wipe a cam lobe in a flat-tappet engine; PennGrade 1 maintains the high ZDDP levels these engines were designed around.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhen should I use SAE 50?\u003c\/b\u003e SAE 50 is the heaviest weight in the lineup — used in hot climates, sustained high-load operation, and built engines with deliberately loose bearing clearances. It is not recommended for cold-start operation below ~70°F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIs this the same as the original Brad Penn green oil?\u003c\/b\u003e Yes. PennGrade 1 is the modern brand name for the legendary \"Brad Penn\" oil, refined in Pennsylvania from paraffinic crude with the same high-zinc additive package.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003e\u003cb\u003eExplore Related Categories\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/collections\/oils\"\u003eOils \u0026amp; Lubricants\u003c\/a\u003e · \u003ca href=\"\/collections\/engine\"\u003eEngine\u003c\/a\u003e · \u003ca href=\"\/collections\/all-vw-aircooled\"\u003eAll VW Air-Cooled\u003c\/a\u003e\u003c\/p\u003e","brand":"PennGrade 1","offers":[{"title":"Default Title","offer_id":45031565262963,"sku":"27-7115-6","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/50w-HP-Oil-bottle-1.png?v=1779613450","url":"https:\/\/www.washburnsmetal.com\/products\/penngrade-1-high-performance-engine-oil-sae-50-1-qt-heavy-duty-straight-weight-27-7115-6","provider":"Washburn's Metal","version":"1.0","type":"link"}