Greetings. I've been lurking here since the forum's inception, finally signed up, and now I'm seeking advice.
I've just purchased a 1966 BSA lightning which is a 650 parallel twin with seperate chain/clutch and gearbox cases. The motor has 1500 miles since a total rebuild by a trusted mechanic who is also the former owner. The previous owner had 20-50 in the engine, not sure about the chaincase, and Redline gear lube in the gearbox.
The manual calls for 40-50 for summer and 20-40 winter with 2000 mile OCI.
Gearbox calls for SAE 50. The Haynes manual says to use 90 gear oil which is what the previous owner was using. The primary chaincase calls for SAE 20 motor oil. I was thinking Rotella 15-40 in the engine and chaincase and 90 gear lube in the gearbox. I like Rotella and use both dino and T6 in my newer bikes. This bike is pristine and I'd like it to last as long a possible. Suggestions or comments appreciated. Thanks
I've just purchased a 1966 BSA lightning which is a 650 parallel twin with seperate chain/clutch and gearbox cases. The motor has 1500 miles since a total rebuild by a trusted mechanic who is also the former owner. The previous owner had 20-50 in the engine, not sure about the chaincase, and Redline gear lube in the gearbox.
The manual calls for 40-50 for summer and 20-40 winter with 2000 mile OCI.
Gearbox calls for SAE 50. The Haynes manual says to use 90 gear oil which is what the previous owner was using. The primary chaincase calls for SAE 20 motor oil. I was thinking Rotella 15-40 in the engine and chaincase and 90 gear lube in the gearbox. I like Rotella and use both dino and T6 in my newer bikes. This bike is pristine and I'd like it to last as long a possible. Suggestions or comments appreciated. Thanks
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