Search results

Congrats on the Sportster. It remains the more enjoyable bike to ride for me.I only use Castrol GTX 20W50 in the Sporty and have never had any issues. I have had this bike for 24 years and have ran the same oil since day one. The Dyna gets Castrol but in synthetic 20W50. No valvetrain noise from...

Originally Posted By: sasilverbullet I've owned 3 different 944 series Porsches. Before I switched to pure synthetic (Amsoil) I used Castrol GTX 20w-50. Granted I live in South Texas and I drove them over 1000 miles per month, hard. Since you live in Vermont and don't drive hard, I would go with...

I don't drive this car in the winter. The issues I have had with synthetic were with a '66 Spitfire, '71 TR-6 and '88 Harley Sportster. Synthetic always seemed to blow through the seals on the cars and seeped through the gaskets on the Harley. Once I switched back to 'Dino' all was well again...

Thanks for that. There is some good info there. Unfortunately I prefer to stay away from synthetic. I don't use it in any older vehicle.

New member, first post. I have been using Castrol GTX 20w50 with the Lucas Break-in Oil Additive with no ill effects but was wondering if I should be using something else. I am interested in any recommendations. Here is my information: 1. What kind of vehicle you have: {1984 n/a Porsche 944...