Oil for old cars (no cats)

[GeorgeCLS]

Another good alternative which works wondefully (much experience with BTW) is a high quality diesel engine oil. They are super fortified with AW, detergents, etc. and transition very well. I know of 20+ Rolls Royce Shadows each valued in the millions that run the Delvac 1300S and oil analsys, oil usage, etc. are excellent
George Morrison

[ August 13, 2002, 02:01 PM: Message edited by: GeorgeCLS ]

 

[MolaKule]

Geeze, if owned a RR I'd go with Delvac 1 or hire another guy to help me formulate a new oil for the RR market.

 

[GeorgeCLS]

Yes, it is amazing, but they feel more comfortable with the 1300S... Some of them "use/Leak' coolant very badly and the only alternative is to simply change oil, frequently.. Sometimes as much as 2 or 3 times in a long weekend if they are touring..
George

 

[therion]

quote:

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Originally posted by GeorgeCLS:
Yes, it is amazing, but they feel more comfortable with the 1300S... Some of them "use/Leak' coolant very badly and the only alternative is to simply change oil, frequently.. Sometimes as much as 2 or 3 times in a long weekend if they are touring..
George

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from what i have read, the older rolls are very sensitive to coolant corrosion and you should change it often when using the green stuff. A solution would be to use a less corrosive coolant like G-05 or SynLube.

 

[Lance]

I have a collection of old owner's manuals for various American cars- fifties thru the seventies. none recommends anything over 30W. Most recommend 10W30. Even for the fifties cars.

 

[TallPaul]

Since part of this thread is discussing the merits of straight weight vs multigrade, I will pose a question. I have read that if your engine overheats (not necessarily severely) you are better off with a multigrade than a straight weight. This seems to be opposite what one would expect. Can anybody shed light on this?

Valvoline All Climate 15w40 has higher zinc and phosphorus levels, more like a heavy duty engine oil. Or what about running one of the so-called "high mileage" oils. Some of them are SJ I believe and are thicker.

 

[jthorner]

Isn't this the kind of application where a high mileage 20W-50 oil would be just the ticket?