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Topic: Block heater on overnite? (Read 995 times) previous topic - next topic

Block heater on overnite?

We want to leave early in the morning but temperatures are predicted to go to minus digits. Can I turn on the block heater late the nite before and leave it on until we disconnect in the AM without any problems?
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: Block heater on overnite?

Reply #1 –
What engine do you have?  I found an aftermarket block heater for Cat that says you can leave it on overnight.
John Cooper
'91 GV 36'
Oshkosh chassis
Cat 3208T 300HP

Re: Block heater on overnite?

Reply #2 –
Quote from: nitehawk –
We want to leave early in the morning but temperatures are predicted to go to minus digits. Can I turn on the block heater late the nite before and leave it on until we disconnect in the AM without any problems?

Absolutely! That's what it is for and if it is cold enough to need it, it is probably cold enough to take overnight to warm up oil.
No RV! Have hung up the keys.
In the past: 2016 Winnebago Era, 1994 Foretravel U240, 1995 Foretravel U240 (wide body), 1999 Foretravel 320, 36 Foot, 2003 Foretravel U320 38 foot,

Re: Block heater on overnite?

Reply #3 –
Unless it's 100 degrees out I always use the block heater.


best, paul

Quote from: nitehawk
We want to leave early in the morning but temperatures are predicted to go to minus digits. Can I turn on the block heater late the nite before and leave it on until we disconnect in the AM without any problems?
1999 U320 40' 1200 watts on roof. 12cf AC/DC Cold plate fridge/freezer. VMS 240 CL Honda Element

Re: Block heater on overnite?

Reply #4 –
Block Heater, In the block type, 120 Volt, 1500 Watt, 12.5 Amp, can stay on for much longer than over night.  Relax and enjoy.

Re: Block heater on overnite?

Reply #5 –
Thanks for the replies. By the way it is the old '89 Detroit diesel
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: Block heater on overnite?

Reply #6 –
I've left them plugged up for days on diesel trucks back in the 80's and 90's. I never saw or knew of any reasons not to. I don't have one on the 3208 cat in my coach. I left one plugged up in Minneapolis for 9 days while I flew home to Ark for Christmas. Got down to 75 below wind chill and 40 below out right while I was gone. Well below zero when I returned and the cummins started. She rocked and bucked and blew smoke rings for a long while but I just walked off from her and let her smooth out. That was on a 85 model 350 cummins.
Dub McBride 1996 270

Re: Block heater on overnite?

Reply #7 –
I have an 8v92 year 88 and like all the rest I leave it on all the time when I have the need . fwiw we leave our trucks pluggedin for weeks here in Montana
Andy & Eileen
MONTROSE COLORADO
1992 U300  40' 6V92 TA
2016 4 Runner
1998 Jeep Grand cherokee

1998 Jeep Grand Cherokee) Build # 4135 Skp# 122921