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The BMW Range
3 Series
E90, E91, E92, E93
Anyone using Castrol Edge Sport 0w40
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<blockquote data-quote="astroboy" data-source="post: 350213" data-attributes="member: 4527"><p>I know engine oil viscosity should not interfere with the transmission ratio, thus rpm-to-speed ratio should remain. Can it be with the thicker old, the engine runs hotter, thus spreading heat to ATF and making ATF to be less effective? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /></p></blockquote><p></p>
[QUOTE="astroboy, post: 350213, member: 4527"] I know engine oil viscosity should not interfere with the transmission ratio, thus rpm-to-speed ratio should remain. Can it be with the thicker old, the engine runs hotter, thus spreading heat to ATF and making ATF to be less effective? :eek: [/QUOTE]
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Anyone using Castrol Edge Sport 0w40
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