Need some help from all you oil gurus.
I am responsible for the care of several large museum car collections. The cars range from brass era veterans to 70s muscle and european supercars. They are all suffering from internal corrosion to varying degrees and I hope changing our oil specs may help. Problems seen are:
1. Visible rust on steel and iron components on stripdown.
2. Black crevis corrosion stains on cam lobes and followers and other similar pressure contact surfaces.
3. Witness marks of repeated micro welding of rings to cylinders.
4. Constantly high wear metal number in oil analysis.
5. Low time since overhaul engines with smokey exhausts.
Conditions:
1. Vehicles in humidity controlled storage.
2. Every effort made to ensure vehicles are driven for at least 30 mins and oil temps held up long enough to avoid condensate buildup whenever they are used. Supported by low water numbers on analysis.
3. Constant oil changes - minimum every year.
4. Very limited use - periods of 3-12 months between uses.
5. Current lubes - generally dead dinosaurs by Castrol. No synthetics (yet).
Whilst the obvious solution is drive them all every week, it can't be done and I need some good advice on what factors will improve protection during storage. Cost is not a major factor.
Concerns:
1. Rumors of some synthetics causing further corrosion issues (e.g. Gp V ester such as Redline associated with cam pitting).
2. Seal problems (e.g. "Mobil1 not tested with or recommended for seals in vehicles produced before 1980...." from Mobil).
Any and all suggestions welcome.
NPJ
I am responsible for the care of several large museum car collections. The cars range from brass era veterans to 70s muscle and european supercars. They are all suffering from internal corrosion to varying degrees and I hope changing our oil specs may help. Problems seen are:
1. Visible rust on steel and iron components on stripdown.
2. Black crevis corrosion stains on cam lobes and followers and other similar pressure contact surfaces.
3. Witness marks of repeated micro welding of rings to cylinders.
4. Constantly high wear metal number in oil analysis.
5. Low time since overhaul engines with smokey exhausts.
Conditions:
1. Vehicles in humidity controlled storage.
2. Every effort made to ensure vehicles are driven for at least 30 mins and oil temps held up long enough to avoid condensate buildup whenever they are used. Supported by low water numbers on analysis.
3. Constant oil changes - minimum every year.
4. Very limited use - periods of 3-12 months between uses.
5. Current lubes - generally dead dinosaurs by Castrol. No synthetics (yet).
Whilst the obvious solution is drive them all every week, it can't be done and I need some good advice on what factors will improve protection during storage. Cost is not a major factor.
Concerns:
1. Rumors of some synthetics causing further corrosion issues (e.g. Gp V ester such as Redline associated with cam pitting).
2. Seal problems (e.g. "Mobil1 not tested with or recommended for seals in vehicles produced before 1980...." from Mobil).
Any and all suggestions welcome.
NPJ
