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How to Clean Cosmoline From BMW Engines, Zymol Strik

Sep 4 18

BMW enthusiasts who have been with the marque for more than just a couple years are well familiar with the Cosmoline preservative compound that BMW used to prevent bare aluminum parts, under-hood and under-car areas from corrosion.  The Cosmoline was sprayed on at the factory and solidified into a nearly impervious waxy film.  While the anti-corrosion properties are welcome, the Cosmoline itself is … well, ugly.

For an enthusiast who enjoys keeping a detailed engine compartment, Cosmoline is the bane of his/her automotive existence.  The compound is impervious to common cleaners and solvents.  We’ve tried all kinds of cleaning methods with the goal being a well detailed under-hood with bright aluminum and clear inner fender paint.  Years ago, we finally found a product that works.

Zymol (makers of high quality, environmentally friendly automotive waxes and detailing products), introduced their Strik product years ago and we found that it worked quite well to dissolve the Cosmoline without causing damage to the underlying metals and paint.  We were reminded of the Zymol Strik when our friend, Phil, asked about cleaning the Cosmoline off of his newly acquired 1990 Z1.
1991 BMW Z1 purchase day BAVauto

We sent Phil some of the Strik and he went to work.  Check out his initial efforts, below, after his first pass.

BMW Z1 before cleaning cosmoline with Zymol Strik BAVauto

BMW Z1 After using Zymol Strike cosmoline remover BAVauto

Phil did note that he needs to do a second application and it did require some mechanical abrasion (minor scrubbing), but the Zymol Strik worked far better than anything he had tried up to this point.

Click below for Zymol Strik:
Zymol Strik Cosmoline remover engine cleaner BAVauto ZYM 307


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Liqui Moly Classic Motor Oil 20w50, 20w-50 HD

Aug 24 18


Liqui moly Classis 20w50 HD 20262 from BAVauto

Liqui Moly offers the CLASSIC line of non-synthetic blended mineral based motor oils for those who prefer to run a conventional motor oil in their BMWs …. or any other model.  The Classic line of blended mineral oil motor oils is tailored for the requirements of classic automobiles and motorcycles.  The highest quality base oils and additives offer optimum lubricity and wear protection.

API approvals:

Click image below for Liqui Moly Classic 20w-50 HD:
Liqui moly Classis 20w50 HD 20262 from BAVauto

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BMW and MINI Motor Oils, LL-98 vs LL-01 vs LL-04

Aug 22 18

While, there are many motor oils that meet, or exceed, the API (American Petroleum Institute) requirements for use in BMWs and MINIs, many BMW and MINI owners prefer to adhere to the BMW specific “Longlife” specifications, to include; the obsolete Longlife-98 and the current Longlife-01 and Longlife-04 specifications.  In reference to these specs, there has been some level of confusion.  Let’s take a quick look at the three Longlife specs:

Longlife-98 (LL-98):
BMW longlife (extended oil change intervals) approved oils.  Typically called out for BMWs through 2001.  Superseded to Longlife-01.

Longlife-01 (LL-01):
BMW longlife approved synthetic technology oils (BMW and MINI branded oils are Hydrocrack oils … not full synthetic). Typically called out for BMWs and MINIs 2002 on (with some exceptions).  Also for use where LL-98 was originally called for.

Longlife-04 (LL-04):
BMW longlife approved synthetic technology oils (BMW and MINI branded oils are Hydrocrack oils … not full synthetic). Low SAP (Sulfur, Ash, Particulates) formulation, required for Diesel models with Diesel Particulate Filters (DPF).  Can also be used in all gas & diesel engines that do not specifically call for LL-04 oils.

Click HERE for info on Liqui Moly synthetic motor oils that meet the BMW and MINI  Longlife specs.

Click below for BMW and MINI motor oils:
Liqui Moly Redline Rowe BMW and MINI motor oils BAVauto

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