15W40 versus 10W40 ?
Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 3 Series
Forum Discription: This forum will deal with any issues on the BMW 3 Series (E21, E30, E36, E46, E90, E91 & E92)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=29050
Printed Date: 29-April-2024 at 15:11
Topic: 15W40 versus 10W40 ?
Posted By: Kevin_E30_318iS
Subject: 15W40 versus 10W40 ?
Date Posted: 04-April-2006 at 15:43
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I was looking at the selection of Duckhams oils at one of the local motor factors and they have a 15W40 mineral oil and a 10W40 synthetic based (semi-synthetic?) oil.
Which would be the best for an E30 318iS? Price isn't an issue since they are roughly the same price, but I wonder would the synthetic based oil be a bit too thin for the M42 engine? The oil is changed every 3,000 miles. ------------- Kevin_1990_318iS |
Replies:
Posted By: b318isp
Date Posted: 05-April-2006 at 07:56
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No, use the 10W40 semi, the M42 is a relatively advanced engine. ------------- 
http://www.esatclear.ie/~bpurcell/index.html - My E30 318is Site |
Posted By: neileg
Date Posted: 05-April-2006 at 07:56
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I use 10W40 semi syn in my M42 without any issues. I change it when the service indicator tells me to - about 6,000 miles. ------------- Cheers, Neil |