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International Automotive Technicians Network

Castrol Forum

Professional automotive forum, sponsored and run by Castrol, for discussion of Castrol oil products. Messages may include, but are not limited to, passenger car motor oil, motorcycle oil, automatic transmission fluids, other fluids, motor oil types, product specifications, product applications, and other related topics. This forum is for experienced automotive repair professionals only, membership required.

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Recent Automotive Discussions in the Castrol Forum

BMW Engines AND Oil Life
04/29/2022 in the Castrol Forum
2 former BMW dealer techs were taught that regardless of very low mileage, if oil wasn't changed at least yearly, premature t-chain / components' wear results. My first thought was BS, just an easy excuse for oil & design & parts quality issues. One tech ...
Castrol Team Update
04/25/2022 in the Castrol Forum
Hi everyone, I wanted to let the iATN members know that we have not abandoned this forum. We had a key scientist/tech member retire and another move to a new internal position. Of course these were the 2 people who where tasked with monitoring this forum....
HTHS
04/21/2022 in the Castrol Forum
Can anyone speak to exactly why Euro cars required higher dynamic viscosity (vs Asian & Domestics) ? I accept it is true, but would like to understand why. If it were just one or two very unique engine designs I would attribute to that. But why is it ...
Mobil 424
04/11/2022 in the Castrol Forum
What would be your substitute for Mobil 424 It is spec for a Bobcat tractor hydraulics but not readily available here Thanks.
ISO 4925 Class 5-1, 6 and 7 Brake Fluids
02/25/2022 in the Castrol Forum
WARNING: Technicians, Managers, TRAINERS and TECHNICAL WRITERS are consistently confusing Brake Fluid Technical Standards and requirements with Marketing terms. Proper low temperature function of ABS and stability control systems increasingly depends on t...

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