<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I am using 15W50 in all my cars at this point: 1966 MGB, 1967 Plymouth slant six, 1967 Plymouth 4bbl V8; specifically, Mobil1 15W50 which is formulated for flat tappet engines and has 1500ppm zinc. Note that other weights of this brand are NOT appropriate for older cars.<div class=""><br class=""></div><div class="">50 is not too high viscosity for summer use in California (it’s really what you want), and 15W indicates that is not too heavy for winter use.</div><div class=""><br class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="margin: 0px; font-size: 13px;" class="">--</div><div style="margin: 0px; font-size: 13px; min-height: 16px;" class="">Max Heim</div><div style="margin: 0px; font-size: 13px;" class="">'66 MGB</div></div></div>
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<div><br class=""><blockquote type="cite" class=""><div class="">On Oct 7, 2022, at 8:02 AM, <<a href="mailto:jimray@hartcom.net" class="">jimray@hartcom.net</a>> <<a href="mailto:jimray@hartcom.net" class="">jimray@hartcom.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Verdana; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 12pt;" class="">I am puzzled about the proper oil viscosity for my Rover 3.5 V8 engine. Des Hammill's book<span class="Apple-converted-space"> </span><i class="">How to Power Tune RV8 Engines<span class="Apple-converted-space"> </span></i>states “Anyone used to oil pressures hovering around 70 – 75 psi on an MGB 1800 engine will be alarmed to see pressures in the Rover V8 reading 15 – 40 psi. These engines are low-pressure engines with normal pressures (hot) at 20 psi idle using a 15W 50 oil, and 40 psi over about 3500 rpm.” Its time for me to change the oil in mine and 15W 50 seems a bit high when compared to oil normally used in my other US built cars. Anyone have any thoughts or suggestions to this?<o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 12pt;" class=""><o:p class=""> </o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 12pt;" class="">Thanks in advance for your input.<o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 12pt;" class=""><o:p class=""> </o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 12pt;" class="">Jim Ray<o:p class=""></o:p></span></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Verdana; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Verdana; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Verdana; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><a href="mailto:Mgs@autox.team.net" style="font-family: Verdana; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; 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font-family: Verdana; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Unsubscribe:<span class="Apple-converted-space"> </span></span><a href="http://autox.team.net/mailman/options/mgs/mvheim@sonic.net" style="font-family: Verdana; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">http://autox.team.net/mailman/options/mgs/mvheim@sonic.net</a></div></blockquote></div><br class=""></div></body></html>