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What 15W-40 oil of yours has the highest zinc content?
And what is that concentration amount specifically. I
have a 67 Barracuda with a 440. The old timer that built
the motor recommended T1 diesel 15W-40 due to 1300 zinc.
However rumor has it you cut the zinc to 900. Can you
advise?
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Our Shell Rotella T1 30W or 40 would work well. Also, our
Rotella T4 15W-40, T5 15W-40 and T6 15W-40. All of these
motor oils have 1200 ppm of zinc which can be used for
your 1967 Barracuda 440 flat tappet engine.
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Zinc is an important component in Zinc
dialkyldithiophosphate (ZDDP) which forms a sacrificial
anti-wear film in an engine to help protect internal
components such as a camshaft. Most Shell Rotella engine
oils, including T6 5W-40 Full Synthetic Heavy Duty Diesel
Engine Oil, contain approximately 1200 ppm of zinc which
will benefit older and high-performance engines.
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Is Rotella T4 safe to use in motorcycles? The back of
the bottle says it meets or exceeds the specifications
of JASO MA/MA2?
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Yes. Shell Rotella T4 15W-40 Triple Protection Heavy Duty
Diesel Engine Oil meets the JASO DH-2, MA, and MA2
specifications which are applicable for motorcycles with a
wet clutch system. In addition, Shell Rotella®
T6 5W-40 and Shell Rotella T6 15W-40 Full Synthetic meet
specifications. As always, please be sure to check your
OEM and warranty requirements.
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